Agent sessions come back after a relaunch: Codex retries a busy lock, Claude Code resumes in the right directory, agy and OpenCode auto-resume, and Running/Idle stays accurate when a Stop hook never arrives. Codex no longer asks to review cmux's own hooks.
Cloud recovers frozen machines and wedged terminal links, shows a new split's terminal sooner, and explains a full resource pool instead of reporting a missing plan. Shared team members can enable Cloud, and the upgrade offer shows your next plan tier.
Sign-in refreshes its token only near expiry, retries when the sign-in service is busy instead of failing, and shows the error details when it does fail.
minimum-contrast is set (#19921) -- thanks @teamleaderleo, and thanks @travisp for the report!background-opacity is below 1 (#17548) -- thanks @csyio, and thanks @CinnamonRolls1 for the report!cmux browser rejects invalid automation arguments instead of running them (#18838) -- thanks @soyeladice-svg, and thanks @teamleaderleo for the report!ui.newWorkspace.action again (#20287) -- thanks @nebullii, and thanks @clain23 for the report!cmux ssh workspaces keep connecting instead of showing SSH errors, and cmux's private route marker no longer leaks into scp and ssh (#20586, #20279) -- thanks @nebullii, and thanks @dericknwq for the report!cmux vm restart prints OK like pause and resume (#20361, #20345, #20376, #20526)Ctrl-Cmd-E focuses the sidebar, Ctrl-Cmd-1 through 9 focuses a pane by number, and Cmd-Shift-B jumps back to the pane where you last sent a prompt.
BMeyendriesch
CinnamonRolls1
clain23
MinsehKim
Mirksen
SeanPedersen
sebushi113
theoklitosBam7
travisp
vjintageboy⌃⌘1 to focus the first pane.Global search finds open Claude Code and Codex sessions by the text of their conversations.
⌘⌥F and type something you remember from the session.Cmd-click opens relative paths as files, folders in Finder, and notes.md:12 in the Markdown viewer. Cmd-hover underlines only paths that exist.
⌘ over a file path in a terminal and click it.Programs can report idle, working, blocked, done, or error with OSC 7501, and the workspace sidebar shows it. Scripts can follow program_status.changed on the cmux-events stream.
printf '\e]7501;state=working\e\\'; sleep 5 and watch the workspace in the sidebar.Stable ships thin arm64 and x86_64 builds in a smaller DMG with a one-hop update path.
program_status.changed on the cmux-events stream (#18742, #19091)cmux ssh-tmux <destination> list and cmux ssh-tmux <destination> attach <session> list and attach remote tmux sessions (#18645) -- thanks @dev-fennek for the report!browser.showLinkHoverURL) (#17258) -- thanks @jfexyz!workspaceColors.brightenInDarkMode can be turned off to show workspace colors exactly as chosen in dark mode (#17308) -- thanks @csyio, and thanks @jalnanco for the report!app.warnBeforeClosingAgentSession) (#17430)cmux.json covers classic font sizes, Sleepy Mode, and more settings sections, and edits apply live without a restart (#17467, #17466, #17446, #17442)app.goToWorkspaceOrder: "recent" (opt-in) (#18646) -- thanks @s4ff0x for the report!cmux ssh-tmux --transport et connects over EternalTerminal, and hosts can share one connection so you approve sign-in once (#8721) -- thanks @ejc3!notes.md:12 in the Markdown viewer, and does nothing for missing paths; Cmd-hover underlines only paths that exist (#19376, #19397, #19443, #19452)cmux CLI and the app are different versions, the CLI explains the mismatch instead of printing method_not_found, and strips terminal control characters from printed errors (#17561, #18171, #18190)cmux welcome lists the default shortcuts again (#18110)cmux suggests your Claude Code login email as the account label (#18499, #18538, #19231) -- thanks @samuelpatro!cmux ssh-tmux mirrors (#19104)feed.push no longer holds a control-socket slot (#19680) -- thanks @zelig81 for the report!surface-tab-bar-font-size (#18272) -- thanks @ernotuovinen for the report!cmux ssh browser panes load pages, forward localhost to the SSH host, and stop their forward when cmux exits (#18956, #19808) -- thanks @lucasr1b, and thanks @dericknwq for the report!cmux ssh panes restore copy-on-select, and mirror panes copy with Cmd-C and Edit > Copy (#19099, #19630) -- thanks @kj648, @f1shb0n3 for the reports!cmux ssh passes the full local environment to ProxyCommand, fixes agent environment and relay auth errors, and retries the recovery read before failing an open (#18285, #18662, #19330) -- thanks @xybio, @ataraxiat for the reports!cmux restore (#17435, #17475, #17521)cmux claude-teams launches when Claude Code integration is off, and Codex Teams remote resume and fork keep prompt text after -- and drop the bypass-sandbox flag (#18276, #18167) -- thanks @globalsecurepayments for the report!#{socket_path} and #{pid}, so OMC 5.6+ team startup works, and tmux list-panes no longer lists Dock panes (#18396, #18623) -- thanks @aidaodedjl, and thanks @maschenborn for the report!cmux browser storage get keeps __proto__ keys (#18577, #18527) -- thanks @nebullii, @scs0209!close-surface reach a moved pane by its surface ID (#19073) -- thanks @nebullii, and thanks @roypadina for the report!cmux vault fork rejects --checkpoint and --turn used together (#18415) -- thanks @tk1475!cmux vpn rejects invalid or trailing arguments before connecting (#19253, #18704) -- thanks @soyeladice-svg!clipboard.write is gesture-gated and write-only (#19372, #19333)
AdamDureyAtWillship
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zhechenzhuClaude Code and Codex on a cmux ssh host show Running, Needs input, or Idle in the sidebar, like local agents. A stopped Claude Code session can move between your Mac and a host with its transcript and git working tree.
cmux session move <session-id> --to user@host.Over a slow remote link, the characters you type appear right away, underlined until the remote shell confirms them. It is on by default for remote terminals.
Terminal scrollback is checkpointed, and interrupted Claude sessions can be recovered after a crash. Agents whose turn ends on a retryable error, such as model capacity or a dropped connection, are told to continue automatically.
cmux session restore to bring back interrupted agent sessions.Settings shows one categorized section at a time, with a theme gallery and controls for Ghostty fonts, cursor, and opacity.
⌘, and pick a section from the sidebar.Import settings from iTerm2, Terminal, Alacritty, Kitty, WezTerm, or Warp, and pick a Base Keymap preset that matches the shortcuts you already know.
cmux import, or open Settings > Keyboard Shortcuts.Each prompt you submit to an agent leaves a marker on the terminal scrollbar. Click a marker to jump back to that prompt in scrollback.
Global Search finds text in the scrollback of open terminals. Return on a terminal hit opens that pane's find bar on the match.
⌥⌘F and type text from any open terminal.A lock badge shows while a program such as sudo or ssh reads a password with echo off, so you can tell it is waiting for one.
read -s at a shell prompt, or turn it off in Settings > Terminal > Password Input Indicator.cmux session move <session-id> --to <ssh-destination|local> moves a stopped Claude Code session, its transcript, memory and git working tree, between this Mac and an SSH host and resumes it there (#14959)cmux ssh host show Running, Needs input, or Idle in the sidebar; cmux installs their hooks on the host when the Integrations toggles are on, including under proxy or account-switching launchers (#14902, #14908)terminal.reflowHardWrapOnCopy, off by default) rejoins lines a program wrapped at exactly the terminal width when you copy (#6923) -- thanks @mvanhorn!vm.cloud_agent_open, and cmux vm prompt --open pi (#14819) -- thanks @aliyansajid!cmux resize-window --window <handle> --width <w> --height <h> resizes a window from the CLI or socket, keeping its top-left corner in place (#9826) -- thanks @ejc3!cmux sessions --json shows launch_rejection_reason, explaining why a captured agent launch command was rejected for restore (#10347, #10440) -- thanks @smoreg, and thanks @WTF-Am-ID for the report!agents.launchers in cmux.json declares an external wrapper (such as a multi-account router) so session restore resumes the agent through it instead of dropping it (#10503) -- thanks @smoreg!shortcuts.bindings.toggleFileEditorWordWrap) (#12814)SocketControlMode profile key (com.cmuxterm.app) forces the automation socket to cmuxOnly or off, and cmux socket-status --json reports the effective mode (#12955)cmux config doctor (also check and validate) checks cmux.json values against the settings schema, and invalid setting writes from the CLI or Settings leave the file unchanged (#13146)cmux docs workflows (or cmux docs templates) lists the bundled workflow examples, what each creates and needs, and the commands for saved layouts (#13189)cmux local-tmux (#13210)cmux themes picker with live preview (#13224)stable_surface_id and stable_workspace_id, so scripts can find a surface again after restore (#13247)cmux current [--json] [--limit <n>] and Find Work in the Command Palette list your current workspaces, agents, attention and PRs, local and Cloud (#13269, #13274)cmux ssh-tmux --name <title> sets the local workspace title without renaming the remote tmux session (#13287) -- thanks @iamcobolt!cmux.json can list local config packs under packs (directories resolve through cmux.pack.json), adding their actions, commands, workspaces, and buttons; direct config still wins (#13356)sidebar.workspaceDescriptionColor) sets the sidebar workspace description color; unset, it follows the theme (#13597) -- thanks @godfreyponce for the report!Reorderable({ onDragChange }) (#13841, #14117)terminal.paste returns delivery: delivered or queued, so scripts can tell whether text reached a live terminal or was queued (#13849) -- thanks @chriskr7 for the report!cmux ssh terminal downloads the remote file and opens it in cmux's preview, instead of doing nothing or opening a same-named local file (#13866)terminal.textEditingGestures, off by default) makes Cmd/Option arrows and deletes move and delete by line and word at the shell prompt (#13921)terminal.predictiveLocalEcho: false) shows characters typed over a slow remote link immediately, underlined until the remote confirms them (#13967, #14860, #15217)agent.hook.UserPromptSubmit events in cmux events include prompt_length, the submitted prompt's length in characters (#14045) -- thanks @jtsternberg for the report!app.defaultWorkspacePath in cmux.json sets the folder Open Folder starts in, from both the File menu and the command palette (#14455) -- thanks @su-record for the report!focusHistoryLast, no default shortcut) jumps back to where focus just was; pressing it again toggles between the last two positions (#14700) -- thanks @idr4n for the report!app.equalizeSplitsOnCreate, off by default) gives each new split equal-sized panes in that row or column (#14703) -- thanks @aibakun for the report!cmux paste --surface <ref> sends text from an argument or stdin as a Cmd+V paste, keeping multi-line prompts intact; --submit presses the agent's submit key (#14837)terminal.showPasswordInputIndicator, on by default) shows a lock badge while a program reads a password with echo off; Show Typed Password Dots adds one dot per key (#14867, #14905)cmux ssh panes report their Claude session id to the Mac, so cmux can resume them (#14906)ws, p, ls, rm) and tmux-style commands (splitw, selectp, neww, send-keys and more); cmux help shorthands lists them (#12863)cmux auth team list|use|create does the same from the CLI (#13051, #14337)app.warnBeforeClosingWorkspace, on by default) turns off the "Close workspace?" prompts; pinned workspaces still ask (#14979)cmux.copyWorkingDirectory, cmux.copyProjectRoot, and cmux.copyScreen built-in actions copy a terminal's working directory, its git project root, or its visible screen from a tab bar button, shortcut, or the Command Palette (#14858)cmux pr <url-or-number> attaches, replaces, or clears a workspace's pull request link without changing app focus (#12809)cmux config set apply validated settings through the shared config writer (#13232, #14868, #16222, #16223)notifications.suppressWhenAppFocused can suppress notifications while cmux is the active app (off by default) (#14701)sidebar.compactAgentStatus, off by default) combines agent, PR, and branch state into a compact status glyph with tooltip and VoiceOver details (#14838)cmux session restore; recovery preserves account routing and avoids duplicate launches (#14852, #14870, #15324, #15375)XDG_CONFIG_HOME, and invalid config appears in a visible error card (#14859, #15191)cmux restore-session --from imports another cmux install's saved windows, and --export writes a portable session snapshot (#14861)cmux send --paste sends multi-line text through bracketed paste, and large multi-line sends explain when to use it (#14937)terminal.confirmUnsafePaste can require confirmation in a window sheet before an unsafe paste (#14951)cmux import discovers and imports terminal settings from iTerm2, Terminal, Alacritty, Kitty, WezTerm, and Warp through the shared Ghostty config writers (#15004, #15055)cmux agent message delivers messages through a separate agent inbox instead of inserting them into a person's prompt draft; owned remote sessions can use it through the SSH relay (#15279, #15863)app.tabBarVisibility can hide a pane's tab bar when it has only one tab (#15294)cmux agent hibernate and wake control an individual agent, preserving safety checks and verifying that a resumed agent came back (#15308, #15312)automation.canonicalAgentScratch gives native Claude, Codex, and OpenCode sessions an owned per-session temporary directory, with ownership metadata in session listings (#15610, #15615)/goal resume action is clickable (#15639)cmux browser snapshot names form fields by their <label> text, so plain HTML form inputs are no longer nameless (#10231) -- thanks @thingnoy!agent.resolve_delivery_target socket responses echo the requested PID (#11166) -- thanks @danielraffel!OMP_AGENT_DIR before PI_CODING_AGENT_DIR, so OMP and Pi can use separate directories (#11483) -- thanks @STRML!cmux ssh sessions run on cmux-tui, keeping reconnect, restore, splits, and tabs on the same remote session (#12956)surfaceId or another camelCase alias are rejected with an error naming the snake_case key, instead of acting on the focused terminal (#13214) -- thanks @jtsternberg for the report!cmux --help groups commands by task, and cmux help <topic> shows one group (#13233)cmux last-window and the tmux - window target toggle between the two most recent workspaces, like Focus Last in the History menu, instead of walking further back (#14760)cmux welcome, so it no longer lands in your shell history (#14809, #14857)cmux welcome points to the command palette and Settings > Keyboard Shortcuts (or cmux shortcuts) instead of listing fixed default shortcuts (#14810)cmux set-buffer stores text exactly as given (keeping leading spaces and trailing newlines) and reads from stdin when no text or - is passed (#14836)terminal without a tab spinner (#12979)cmux coderouter, cmux cr, coderouter and cr all run the full CodeRouter CLI, including interactive add (#13100)lsof, ps, and sleep; local port scans stop when port details are hidden (#6032, #10277, #15353) -- thanks @jsamuel1, @hyzyla!new-window accepts a name when creating a window (#14500)fixedSize and reactive frame specifications (#14845) -- thanks @bquigley1!cmux ssh opens faster, avoids typing lag, restores after relaunch, and opens splits in the focused remote location (#15079)Menu in custom sidebars appear instead of being dropped (#14808) -- thanks @aliyansajid!bash --resume <id>) when the captured launch command was the shell bootstrap (#5848) -- thanks @STRML!~/.config/cmux/cmux.json apply on reload instead of needing an app restart (#8562) -- thanks @lucidash!cmux ssh-tmux <host> --new-window works in release builds instead of failing with method_not_found (#8608) -- thanks @thejiajun!TERM_PROGRAM=ghostty and COLORTERM=truecolor instead of inheriting the remote host's terminal identity (#9610) -- thanks @hdimer!cmux command (for example from a shell rc file) arrives while the previous session is still restoring at launch (#9627) -- thanks @hdimer, and thanks @bondijois for the report!ui.newWorkspace.action, like the + button and File > New Workspace (#10248) -- thanks @smoreg, and thanks @CarlRodabaugh for the report!cmux --json list-panes and list-pane-surfaces include pane and surface UUIDs alongside refs, fixing oh-my-claudecode worker pane splits (#10674) -- thanks @basselalsayed for the report!nvim set as the preferred editor no longer leaves hidden editor processes running; cmux opens the file with the system default app instead (#10681) -- thanks @josonchou for the report!cmux events run from outside cmux shows a clear access-denied message instead of a JSON parse error (#10712) -- thanks @taiseii for the report!cmux ssh-tmux mirrored splits keep pane titles set in tmux (for example with select-pane -T) instead of showing only the window name and index (#10714)gh processes (#11035) -- thanks @geonguk for the report!terminal.uploadCommands rules match on the ssh HostName for hosts reached through a ProxyCommand or jump host (#11477) -- thanks @ejc3!split-divider-color (including named colors like orange) sets the pane divider color, unless a cmux pane border color is set (#12066) -- thanks @wooters for the report!goto_split left and right move to the adjacent column in nested layouts instead of skipping to the far pane (#12397) -- thanks @brodynies, and thanks @geodimm for the report!goto_split at the edge of the layout reports that focus did not move, matching Ghostty (#12401) -- thanks @brodynies, and thanks @geodimm for the report!display-message -t and Claude Code teammate split-window no longer fail with rate_limited (#12832) -- thanks @jonahscohen for the report!lsd process at high CPU, even when cmux is not running (#12990) -- thanks @Bug-Proof for the report!cmux-settings keeps the comments, ordering and formatting in your cmux.json (#13218)cmux --json ping, capabilities and list-workspaces work again from an SSH or Mosh session through the relay (#13237) -- thanks @poof86 for the report!cmux-settings validate in the bundled skill accepts every supported setting path, such as sidebar.showPorts (#13250)open inside a cmux terminal with a multibyte argument, such as a Japanese filename, no longer crashes with a segmentation fault (#13301) -- thanks @aerosmooth!ssh -T helper are no longer treated as remote SSH panes for image transfer (#13509) -- thanks @cameronsjo for the report!exit or Ctrl-D honors the quit confirmation setting, including "Don't warn again" (#13583) -- thanks @mykelscappin for the report!/clear, a Claude session shows as idle instead of running until you submit the next prompt (#13586) -- thanks @ddarbyson for the report!claude command in new terminals (#13590) -- thanks @gorosun for the report!#S, #I, #P and #W, in local and SSH sessions (#13608) -- thanks @hohoShin and @hongmono for the reports!surface:7 saved before an app restart fails as unknown instead of targeting a different terminal (#13633)~/.cmuxterm folder inside the project directory (#13635) -- thanks @bobguo for the report!surface.resume.set from the socket or CLI no longer hangs the socket behind an approval dialog; its reply includes approval_required (#13704)workspace.prompt.submitted events report the full prompt length in message_length instead of capping it at 240 (#13728) -- thanks @jtsternberg for the report!cmux reorder-workspace with an unknown --before, --after, or --workspace ref fails with an error naming that ref, instead of "Specify exactly one target" or naming the wrong workspace (#13843, #13961, #13964)cmux events --reconnect no longer exits with "Failed to configure socket receive timeout" when replaying a backlog of events (#13888) -- thanks @LuckVd, and thanks @sebikoux for the report!printf notice into a shell that is not ready yet, and keeps the saved conversation when the ownership check times out (#13891)CMUX_SSH_RECONNECT_LIMIT values above 20 (up to 86400) are honored for SSH terminals, and an unusable value prints a warning naming the fallback (#13959)cmux ssh workspace no longer stalls on a redundant terminal refresh when its screen is already drawn (#14044)cmux restore codex <session> no longer fails when the Codex session database is briefly unreadable (#14291)depends_on macos (#14424) -- thanks @jacula for the report!cmux ssh sessions see your own ZDOTDIR, so zsh setups like zimfw and oh-my-zsh load your prompt and stop reinstalling modules on every connect (#14441) -- thanks @nguyenlc1993 for the report!surface.read_text and read_screen work on a terminal in a background workspace that has never been shown, instead of failing (#14673) -- thanks @EtanHey for the report!cmux close-surface reports the ref of the surface it closed instead of a new, unknown ref (#14698)surface.close returns an error instead (#14704)cmux close-surface with a blank --workspace or --window fails with an error instead of closing the focused surface (#14706)cmux hooks opencode install no longer escapes / in opencode.json, so {file:./AGENTS.md} references keep loading, and a config it already broke is repaired on the next install (#14805) -- thanks @praxstack for the report!NODE_OPTIONS to programs Claude starts, which could crash-loop sandboxed apps (#14812) -- thanks @aliyansajid, and thanks @kensenzhao for the report!MODULE_NOT_FOUND after macOS purges the temp directory, locally and over cmux ssh (#14814, #14851) -- thanks @dmsdc-ai for the report!automation.codexIntegration in cmux.json turns Codex hooks on or off, and cmux config validate accepts several keys cmux already reads (#14816)cmux omo resolves relative file references in your OpenCode config, such as {file:./prompts/chief.md}, without loading agents or commands twice (#14935) -- thanks @aliyansajid!cmux diff --last-turn stays bounded (#14980) -- thanks @Crosery for the report!Broken pipe after sitting idle, and Cloud Diagnostics shows transfer failures with Copy Error (#12759)cd, and the Cloud icon shows the machine's name (#12978)+ menu's New Workspace creates a local workspace even when a Cloud workspace is selected (#13020).exs as text, and preserves SQL highlighting in Jinja templates (#13732, #15634) -- thanks @camilohollanda!read_text reports an unavailable terminal with its reason and how to wake it (#15101, #15159)$? for later PROMPT_COMMAND hooks (#15255) -- thanks @tk1475!cmux terminal screen wait exits with status 1 on timeout (#15282)cmux send refuses to overwrite an agent prompt draft or send through an open dialog (#15302)send-key Ctrl-letter input works with the Kitty keyboard protocol (#15928)NODE_OPTIONS values (#16031)cmux vm push retries transient watch failures (#16130)
aerosmooth
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alechemy
aliyansajid
aparente
artisticmedic
ArtixZ
atsukanrock
attripaustinywang
AvoChangazooz2003-bit
basselalsayed
bcharleson
BedirT
bigtruth
bobguo
bondijois
bquigley1
brodynies
Bug-Proof
cameronsjo
camilohollanda
CarlRodabaugh
chapati23
ChenYunerer
chriskr7
classicluna
Crosery
ctopherwilliams
Daniel-Brestoiu
danielraffel
ddarbyson
dmsdc-aiejc3
enterprisetrapper
EtanHey
geodimm
geonguk
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gilsiun
godfreyponce
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gurbaaz27
hamaney
hdimer
hemingtsai
hemsterhiromasa-hayashi
hohoShin
hongmono
hyzyla
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imTHAI
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jiancui-research
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scarere
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sebikoux
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stormjingSTRML
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yann-lauwersReleased builds ship a checksum-verified cmuxd-remote again, so SSH workspaces bootstrap on macOS and Linux hosts. A session that cannot become ready reports an actionable error within 60 seconds instead of sitting at Last login, terminals keep raw input across reconnects, and new splits open in the remote directory.
cmux ssh user@host to open a workspace on the remote machine.Agents resumed with cmux restore or cmux fork receive terminal resizes again, so their layout no longer garbles after a restore. Images dropped or pasted into a terminal stay on disk long enough for Claude Code and Codex to read them.
cmux restore --surface <ref> or cmux fork --surface <ref> on a saved agent session, then resize its pane.A terminal no longer reloads its dark theme after macOS switches to light, and Light applies the light palette when the Ghostty config sets only a font, keybinding, or opacity.
cmuxd-remote for macOS and Linux, and the release pipeline rejects a build whose daemon manifest and assets disagree (#12720) -- thanks @john-agi for the report!Last login forever when its remote session cannot become ready: the session parks within 60 seconds, the pane and sidebar show the same actionable error, and Reconnect works afterwards (#12851).cmux restore or cmux fork receive terminal resizes again, so their layout no longer garbles after a restore or pane resize (#12796) -- thanks @rizkidarmawan21 for the report!Codex --yolo no longer calls a missing helper or replays a restore command after repeated resume cycles, keeping the active session identity attached to the right terminal.
The CLI authorization page can sign out the current browser account and return to sign-in with the original confirmation code intact.
Cloud terminal sessions accept the workspace-close syntax used by the in-terminal CLI while preserving routing, JSON output, revision fences, and idempotency.
john-agi
mgayaud-meridian
rizkidarmawan21
zhiyuanzhaiworkspace close --workspace ... --focus false, and CLI authorization can switch browser accounts without losing the login code (#12470, #12679).--yolo no longer calls a missing resume helper or recursively injects restore commands after repeated resumes (#12659, #12697).Every agent session lands in a recency-first Vault with day sections and filters, search with agent:, repo:, ws:, before:, and after: operators, and checkpoints you can fork from for Claude Code, Codex, Pi, and Grok, in the app or through cmux vault and cmux fork.
Answer an agent straight from the macOS banner or the iPhone Lock Screen: type a reply on turn-complete and idle notifications, pick an option on AskUserQuestion banners, or send a revision on exit-plan banners. Automations, agent-event context for notification hooks, and per-agent sounds round out the pipeline.
The macOS app is fully localized in German, French, Spanish, Arabic, Korean, Simplified and Traditional Chinese, and Japanese alongside English.
Amp and Hermes join Claude Code, Codex, Pi, and Grok as first-class agents with auto-resume, notifications, and Vault history, Cursor approvals show up as Needs input, and Nushell gets shell integration and session resume.
Workspace switching no longer ghosts or hangs, idle CPU burn from logging and git watchers is gone, terminals in hidden windows release about 40 MB each, persistent SSH reconnects survive sleep and network changes, and Google Sheets no longer pins a core.
Each Computer picks its own connection method with an honest Tailscale Only mode, Simulator panes stream as low-latency video with touch forwarding, the Task Composer keeps drafts and attachments, and workspaces sort, group, and reconnect quietly. Current iOS builds need cmux 0.64.23 on the Mac.
agent:, repo:, ws:, before:, and after: operators, and checkpoints with fork-from-checkpoint for Claude Code, Codex, Pi, and Grok, plus cmux vault sessions|search|checkpoints|checkpoint|fork and cmux fork <kind> <checkpoint> (#10215, #11324); session status dots and a native search field shared with Find (#11915, #12146, #12036, #12109)cmux notify --reply marks a notification replyable (#8670, #10511) -- thanks @azooz2003-bit!amp shim (#9803, #12150, #12166); first-class Hermes Agent restore and notifications (#9540); Antigravity (agy) sessions restore and auto-resume (#12151)~/.cmuxterm/automations.json with notify, RPC, run, and webhook actions, rate limits, dry-run matching, and cmux automation list|show|test|enable|disable|logs|reload (#10654)notifications.hooks receive agent-event context (agent, category, subagent), so a hook can silence subagent completions or route events to a custom notifier (#10212); per-agent and per-alert notification sound overrides with custom sound files, in Settings and as notifications.soundOverrides (#10157)app.paneResizeStepPixels step setting (#4025) -- thanks @SerkanSipahi for the report!cmux.json (#9352) -- thanks @zelig81 for the report! -- and Cmd+Shift+R renames the focused workspace group (#9428, #12410)notifications.paneFlashColor sets the pane attention flash and unread ring color under Settings > Workspace Colors (#8563) -- thanks @mcorcelle!--command on new-split, new-pane, and new-surface (#9614); cmux read-selection and surface.read_selection for terminal, file, Markdown, and browser panes (#10022) -- thanks @hummer98 for the report!; cmux --json tree reports split-layout geometry (#7459) -- thanks @owenjohnson!; cmux comments list reads diff review comments (#9604) -- thanks @haung921209!; cmux notify returns notification ids and supports --clear (#10336); cmux guide and cmux --skill print agent-oriented usage guides (#12468); cmux sessions appears in --help (#10438)browser.urlAllowlist (#10540, #10947) -- thanks @artisticmedic for the report!; cmux browser <surface> download list, and completed downloads drag from the Downloads popover into terminals as file paths (#12461, #12566); a configurable default zoom (browser.defaultZoomLevel, Settings > Browser) and cmux browser zoom <factor> (#10207); chromeless Dock browsers with "chrome": false (#9870) -- thanks @keyserfaty for the report!DisableEmbeddedBrowser and DisableRemoteControl (#10377), DisableRemoteConnections, DisableFileTransfer, and DisableIrohNetworking (#12035)fileEditor.* settings (#10599) -- thanks @justincrich!cmux starts or reuses a detached headless session owner and attaches as a client, so detaching never ends the session; cmux server ensure|start|status|stop|reload-config and cmux session <name> reset-state manage it, and new terminals start in the launch directory (#10734, #9840, #9733, #10404, #10757, #11856)workspace|pane run --on-exit close|keep, terminal <id> output read, terminal process show with the live cwd, and cmux server stats (#10839, #10855, #10704, #11772); durable terminal input succeeds only after the PTY owner acknowledges it (#12142) -- thanks @teamleaderleo!terminal.adaptiveDefaultTheme), and surface-scoped theme reloads no longer leave white text on a light background (#10205, #9764) -- thanks @CodeMarr for the report!cmux restore path, and Vault rows drop onto terminal and browser panes through one router (#9924, #9964, #10032)COLORTERM=truecolor and default TERM to xterm-ghostty when its terminfo resolves, scrollback capacity inherits your Ghostty scrollback-limit, and startup no longer spawns ghostty +show-config (#10429, #10465, #11173, #11196, #9738, #10986)background-opacity (#10562), and every surface shortcut routes through the focused Dock (#9566); Dock agents resume across owner rotation (#9266) and Dock notifications clear on keyboard focus (#9427) -- thanks @jimmyliao for the report!copy_to_clipboard (#11515) -- thanks @majormedical8-coder, @kevin-beaulieu-zocdoc, @kellerriedel-cyber, and @Jeff31UK for the reports!~ in inserted paths (#9734), corrupted PATH bytes are dropped (#12057), bash PROMPT_COMMAND is no longer exported to child shells (#11290), trailing-slash URL detection (#9874), Cmd-click on a GitHub link no longer also reveals the repo in Finder (#10454), and open <url> routes to the built-in browser again (#9781) -- thanks @ddotz, @juliogc, @nikhilgarg-origin, @eattker, and @kojitakemoto for the reports!cmux restore no longer overwrites restored titles (#9621), native fullscreen refits after display changes (#12178), background attention no longer raises cmux under Stage Manager (#9776), invisible accessibility dialog windows no longer accumulate (#9777), and closing a workspace owned by another window (#8753) -- thanks @ejc3! -- thanks @dhruv-anand-aintech, @cjprescott, @nrhys2005, @artisticmedic, and @isseeeeey55 for the reports!browser.eval on macOS 15 (#12237), and reentrant layout during automation (#9773, #9774); restored browser tabs stay lightweight until shown (#11006) -- thanks @spiky02plateau, @yishu-ziyu, @lmy20160829-hash, and @WangRouna for the reports!browser.urlsToAlwaysOpenExternally for in-page links and popups (#10634) and scope cookies clear --url to the URL (#10626) -- thanks @grandmasteri for the reports!; trusted arrow keys from browser.press (#11931) -- thanks @LanceOlsen for the report!; absolute local paths in the omnibar open as files (#10177) -- thanks @gazzua for the report!; Cmd+Z and Cmd+Shift+Z in web page inputs (#9794) -- thanks @kimdane0115 for the report!; Downloads popover contrast (#9744), white toolbar controls on light chrome (#10224), the Dock divider next to a browser pane (#10902), and a new browser landing one slot short of the end (#8705) -- thanks @ejc3!cmuxd-remote (#10555, #10590), works on slow links and past a wedged ControlMaster (#10140), skips a ~7.5s ssh -G wait (#10361), keeps the devcontainer -t flag in place (#9772), and cmux mosh reports the real bootstrap stage (#10101) -- thanks @zy-jordan and @AshotVantsyan for the reports!TERM=xterm-256color instead of xterm-ghostty (#12059), remote tmux output no longer deadlocks the main thread (#10441), tmux 3.7b no longer spins at 100% CPU from redundant resizes (#10142), ssh-tmux sizing recovers after a peer detaches (#9530) -- thanks @HRXWEB!, CRLF session lists parse (#8704) -- thanks @ejc3!, stale SSH and daemon error lines retract after recovery (#9472, #10652), unknown ssh-session-attach ids are rejected (#10445), the file explorer no longer lists the old local path through a new SSH connection (#8595) -- thanks @ejc3!, concurrent tmux set-buffer calls keep their buffers (#11291), and display-message fan-out no longer trips the rate limiter (#12061) -- thanks @fpigeonjr, @benfinklea, @T0mSIlver, @limoragni, @EtanHey, and @robinhur for the reports!CMUX_PI_HOOK_TIMEOUT_MS and failures no longer print JSON into the prompt (#10130); Grok session-start hooks resolve their target (#10551)--agent-name (#9731, #10198, #10356, #10193) -- thanks @theunderdark, @Daniel-Brestoiu, @evanjcosgrove, @debedb, @rocjay1, and @navidemad for the reports!codex exec overwriting the parent resume binding (#10100, #10823), premature completion notifications while a reviewer subagent runs (#10838), Codex Teams app-server leaks (#10448), hook injection with spaces in the home path (#11968), user ~/.codex/hooks.json hooks keep running (#12140), and PermissionRequest raises the permission notification (#9804) -- thanks @smomen, @dhruvja, @robinhur, @dustingelegonya, and @MysterioGhub for the reports!claude attach passes through (#10117) -- thanks @sjiang647!; Escape in the TextBox interrupts a running agent (#10959) -- thanks @rudidev08 and @kiankyars for the reports!/tmp when the state directory is uncreatable (#11050) -- thanks @azooz2003-bit!, surface resume set rejects unknown flags (#9477), and the command palette finds branch short names (#8578) -- thanks @ejc3! -- thanks @nengqi, @MaciejCaputa, and @WTF-Am-ID for the reports!client.log instead of painting over the screen (#10486, #10606, #10954); self-spawns survive in-place upgrades (#10483); failed reconnect checkpoints degrade gracefully (#10484, #10485, #10501); transport loss is reported instead of exiting 0 (#11045, #10937); concurrent attaches no longer duplicate workspaces (#11412); durable exit receipts, cancellable reconnect waits, and snapshot-stable journal paging (#11723, #11673, #11112, #11711, #11886); dimensionless clients report as passive (#11260) -- thanks @eggpeat!; layout is derived from the rendered frame with immediate redraws (#10958, #10962, #10984) and lock-free resource selectors roughly double hook throughput (#11630); owner-only config and state, secret scrubbing, and bounded CDP queues (#10990, #10935, #11396, #11722, #10983)
1045245078
acllm
addisonlynch
adigunners
ajunge
AlanSyue
AlexDemzz
alloevil
aloysbrartisticmedic
AshotVantsyanaustinywangAvoChangazooz2003-bit
benfinklea
bningdd
Carbrex
cassiexflowceo
Ccheng2729111
cjprescott
CodeMarr
crizCraigDaniel-Brestoiu
daniel-ospina
dazebug
ddotz
debedb
dhruv-anand-aintech
dhruvja
DonaldoDes
dustingelegonya
eattker
eggpeatejc3EtanHey
evanjcosgrove
fbartho
fpigeonjr
gazzua
grandmasteri
grant-davidson
Grisu1963
haung921209
HRXWEB
hummer98
ismael-joffroy-chandoutis
isseeeeey55
Jeff31UK
jimmyliao
joelt4njtsternberg
juliogc
justincrich
kellerriedel-cyber
kenifxyz
kevin-beaulieu-zocdoc
keyserfaty
kiankyars
kimdane0115
kojitakemoto
KyleOps
LanceOlsenlawrencecchen
limoragni
lintanghui
lmy20160829-hash
MaciejCaputa
majormedical8-coder
mcorcelle
mekaser
mengyang0007-dev
mgol
Morkeeth
mykmelez
MysterioGhub
navidemad
nengqi
ngsgh
nikhilgarg-origin
nrhys2005
oliver-mee
omarshahine
owenjohnson
PreziosiRaffaele
qyhfrank
RaviTharuma
RemiKalbe
robinhur
RobotZQ
rocjay1
rudidev08
sanshengai
SerkanSipahi
ShuntaH
SimonAB
sjiang647
smomensmoreg
spiky02plateauSTRML
T0mSIlver
teamleaderleo
theunderdark
thiagolopes-dev
timothygray
tleruitte
turygo
vystrcild
WangRouna
WKRachelWTF-Am-ID
XueyanZhang
yishu-ziyu
ykessler
yonnee-kim
ytkimirti
zacplanskyzelig81
zy-jordancmux ssh <host> failing immediately with a shell syntax error from the generated startup script (#9425) -- thanks @KousukeUchiyama for the report!cannot overwrite existing file on every prompt under set -o noclobber (#9420) -- thanks @8bit-void for the report!close or respawn-pane is given an explicit --surface that no longer exists, instead of acting on a different live surface (#9422) -- thanks @PhilipPinckaers for the report!Run iPhone and iPad Simulators as first-class cmux panes, rendered crisply at real size, with their own commands and automation so an agent can drive the simulator next to the terminal that built it.
Remote workspaces can use Mosh instead of plain SSH, so a laptop that sleeps, changes networks, or loses Wi-Fi picks the session back up instead of dropping it.
Leaked openThread loops that burned about 90% of cmux idle CPU are gone, hidden Ghostty renderers release their memory, workspace switching no longer freezes the renderer, and idle background agents hibernate under critical memory pressure.
Cmd+Shift+T reopens the last closed item, Cmd+[ and Cmd+] walk global workspace focus history, surfaces move between panes with automatic directional splits, and Dock panes, workspace IDs, and per-tab terminal zoom all survive a restart.
Stream Mac browser panes to the phone interactively, follow a chronological notification feed, launch agent workspaces from the task composer, and scroll terminals locally on screen-anchored render grids over a rebuilt peer-to-peer transport.
8bit-void
KousukeUchiyama
PhilipPinckaers
seanyoungberggoto_split:previous and goto_split:next cycle through every pane with wrapping (#2639) -- thanks @mykmelez!cmux restore runs without a shell (#9265)openThread loops burning ~90% of cmux idle CPU (#8851)respawn-pane in the Go relay tmux compatibility layer (#8660) -- thanks @bencollins2!.attrib from watched filesystem events (#8659) -- thanks @varomorf!TERM (#9273), and terminal replies leaking into reattached panes (#9272); fix workspace shortcuts from hosted tmux terminals (#8621)PATH inherited from cmuxd (#8677), and login-shell resolution before terminal spawn (#8681)DispatchWorkItem chain stack overflow (#8615) and subprocess pipe descriptor leaks (#9187)The workspace sidebar is rebuilt on native AppKit rows and is now on by default: faster scrolling in large workspace lists, precise hover and selection, and full fidelity with your sidebar settings.
Visually edit pages inside the browser pane, annotate elements, and hand the annotated changes straight to an agent to implement.
cmux now forwards mouse input to TUI applications running in the terminal, so tools that own the pointer respond to clicks, drags, and scrolls as expected.
Codex YOLO mode and Pi sessions survive restore, typing latency from title churn is fixed, sidebar scroll livelocks and popover resize crashes are gone, and remote ssh-tmux panes size and focus correctly.
bencollins2
djova
fml09
joshfree
mrohan-sq
oscarbrey
revanthreddy-hai
varomorfcmux ssh accepts an initial remote command (#8439)Capture the current split arrangement as a named layout, reopen it from the new-workspace menu anytime, and set a default layout that every new workspace starts from.
Right-click an agent terminal to fork the conversation into a new split, tab, or workspace, so you can explore a tangent without losing the original session.
cmux remembers window position and size per monitor configuration and refits windows when displays change, so docking and undocking a laptop no longer scrambles your setup.
A coordinated memory-pressure response with automatic scrollback compression, fixes for macOS 27 launch crashes and SSH panes dying after sleep, runaway scrolling with high-resolution mice, and a Sparkle update that no longer kills running agents on macOS 26.
silouanwrightcmux hooks setup (#7201) -- thanks @liruifengv!notifications.suppressOnlyFocusedSurface setting (#6893)file:// links from the terminal in the OS default app (#7122)cmux ssh-session-attach --split anchors in the target workspace (#7376); shorter unknown-command errors with suggestions (#7329)--new-window keeps a dedicated window (#7264) -- thanks @0xJord4n!ANTHROPIC_MODEL inside cmux so Opus keeps the Max-plan 1M window (#7059)LC_ALL collapsing the spawned-shell locale to C (#7183) -- thanks @artisticmedic for the report!file exists under noclobber (#6815) -- thanks @boolafish for the report!nc for shell-integration socket sends (#7789)cmux ssh remote workspaces (#6831)cmux ssh against hosts configured with RemoteCommand/RequestTTY (#7359)*.localhost under "Exclude simple hostnames" (#6827)cmux mobile set-font live-resizes the mirrored terminal (#6674)Scale the entire cmux interface up or down with a single magnification control, not just the terminal font.
Mirror a remote tmux session over SSH using -CC control mode, so remote windows show up as native cmux tabs that stay in sync with renames and reorders.
Browser panes get a Chrome-style audio-playing indicator and a hard-refresh shortcut. The diff viewer adds a searchable, uncapped branch-base picker with smart defaults and a toolbar that never overlaps at small widths.
Fixes for a sidebar lag regression, a vertical-sidebar tab-switch crash, a ~100% CPU re-render loop on bundled extension sidebars, blank SF Symbol controls on macOS 27, terminal content duplication on resize, and quit hangs from analytics flushing.
0xJord4n
angelobruv
belliedmonkey
boolafish
deftdawg
Diabl0269
gupsammy
liruifengv
lucaspiritogit
mxschmitt
Nauxie
NishantJoshi00
nkbai
petrcernansky
sedghi
spaceshipmike
timothyliu
vk1356
wowpotato
xoxouser00-CC control mode, in beta (#5553) -- thanks @robertnisipeanu!terminal.scrollSpeed (#5671) -- thanks @RubiconPerform!cmux remotes CLI to manage device-registry routes (#6096)--dangerously-skip-permissions (#6608).m4r files as notification sounds (#6635)--settings into injected hook settings in the claude wrapper (#5388) -- thanks @choi88andys!Opt in to have cmux name your workspaces and tabs from the agent conversation running inside them, so a wall of sessions stays readable at a glance.
Set environment variables on a workspace and every shell it spawns inherits them, so per-project configuration no longer has to live in your shell profile.
macos-option-as-alt now distinguishes the left and right Option keys, sending sided modifier bits to the terminal. One of our most-requested terminal fixes.
A redesigned workspace list with groups, unread dots, and last-activity previews; smoother terminal scrolling; cross-device notification dismiss-sync with an authoritative unread badge; and a TestFlight push-notification fix.
Comment on changed lines in the diff viewer, persisted per repo. Attach the comment set to a terminal TextBox to hand structured review feedback straight to an agent.
The Select Workspace and Surface 1…9 shortcuts (⌘1-9) can finally be rebound, and every shortcut supports VS Code-style `when` context clauses so a binding only applies where you want it.
Custom sidebars now render in-process by default with a dedicated Settings section, instant toggling, live-resize repaint, and example sidebars to start from.
An iMessage-style terminal composer with per-terminal drafts, a customizable terminal toolbar, a multi-Mac host switcher, clipboard image paste, and notification forwarding only while you're away from the Mac.
Fixes for the macOS 26 launch hang, a macOS 27 beta launch crash, SSH typing lag, sidebar livelocks with many workspaces, white-on-white light themes, and a UI freeze when closing tabs.
choi88andys
Eridanus117
kylejcaron
robertnisipeanu
RubiconPerform
sergej-koscejev
thiveeiyan
1nto5
alceal
bjesuiter
colangelo
dbachelder
digijoebz
dreasan
edouardp
Fail-Safe
fkchang
joseluislucio
lejahmie
matheustimbo
MrSpock
Reebz
Sancerro
sort2f
tofunori
ucan-lab
wo4wanglewhen context clauses for keyboard shortcuts with VS Code-style context keys and operators, and the Select Workspace/Surface 1…9 shortcuts (⌘1–9) are now rebindable (#5196)cmux window display to place a window on a named display (#5804) -- thanks @azooz2003-bit!claude doesn't resolve to the wrapper (#5721) -- thanks @Lipdog for the report!Pair an iPhone with your Mac from the new Mobile Connect window and attach to your terminals from your phone, with opt-in forwarding of terminal notifications. The iOS beta ships on TestFlight as cmux BETA.
Drag a workspace out of one window's sidebar and drop it into another window's sidebar to move it, including grouped workspaces.
Custom sidebar extensions now run in their own process with an isolated interpreter, so a broken sidebar can't hang or crash cmux, and the interpreter covers a broader set of SwiftUI primitives.
The omnibar selects the whole URL on the first focusing click (Chrome parity), browser chrome scales with the tab bar font size, a typing beachball with large histories is fixed, and hidden panes no longer stop actively-playing audio or video.
Claude resume keeps cmux hooks attached so notifications and status tracking survive resumes, Agent Hibernation works for node-backed Claude sessions, and Codex resume preserves CODEX_HOME and pane order.
abdullahnauman2
denysshnurenko
Dukeman330
haoranaaa
kevinsslin
Lipdog
lleewwiiss
yigitkonurcmux hooks omp (#5413) -- thanks @joshrzemien!cmux send (#5509)CODEX_HOME so non-default Codex homes resume correctly (#5351)Browser panes get a focus mode that strips away the surrounding chrome so a single page can take over the pane while you read or work in it.
`cmux ssh` now forwards your local SSH agent, so remote sessions can use your local keys for git pushes and further hops without copying private keys onto the remote.
Build your own sidebar with a runtime Swift interpreter, behind the Beta Features flag. Edit the sidebar source, validate it from the CLI, and reload it live without rebuilding the app.
The browser now responds to the dedicated back and forward buttons on a mouse, so side-button navigation works the way it does in a normal browser.
Fixed a settings-observation leak that grew the app to 4.4 GB over a day, a browser render loop burning ~39% of the main thread on every CoreAnimation commit, a WebKit crash after sleep/wake, a 100% CPU hang in the Markdown and file-preview editor, and child processes launching under Rosetta on Apple Silicon.
joshrzemien
leodiegoocmux ssh, so remote sessions can use your local SSH keys (#5301)-s disabled sandbox flag (#5276) -- thanks @taonetm7 for the report!Open the diff viewer with a keyboard shortcut, configurable and editable in Settings alongside every other cmux shortcut.
The Markdown viewer gains font size and zoom controls, so you can scale rendered docs up or down without leaving the pane.
The Feed is now gated behind Beta Features and off by default, mirroring how the Dock is gated, so it only appears when you opt in.
Starship and other custom bash prompts no longer go static: the prompt bootstrap composes with your existing PROMPT_COMMAND instead of overwriting it. And `cmux ssh` now reports remote PTY allocation failures loudly instead of failing silently when a plain ssh would have worked.
The right-click sidebar view switcher and built-in views (Default Workspaces, Project Worktrees, and others) are back after a 0.64.11 regression. Restored session scrollback no longer keeps a previous theme's colors, fixing white-on-white history after a theme change.
CharlesWiltgen
HamptonMakes
MaxiAschenbrenner
pstanton237
taonetm7PROMPT_COMMAND (#5187) -- thanks @xzjncu for the report!cmux ssh no longer fails silently when remote PTY attach fails (#5186) -- thanks @windyslow for the report!cmux.json shortcut bindings (#5143)MAX_ARG_STRLEN (#5133) -- thanks @lauzierj!Select sidebar workspaces and press ⌘⇧G to gather them under a collapsible header. Each group has an anchor workspace, its own color and icon, and an unread badge on the header. Drag workspaces in and out, reorder inside a group, and control where new workspaces land per group or via cmux.json. A full `cmux workspace-group` CLI namespace creates, colors, moves, focuses, and deletes groups from scripts.
Navigate back and forward through recently focused workspaces and windows straight from the titlebar, with shortcut hints inline. A searchable Recently Closed history pane reopens surfaces you closed, restoring them to their original anchor.
Idle agent sessions hibernate to cut background CPU and memory, then restore on demand with their state intact, so a sidebar full of agents stops competing for resources while you work in one.
Remote SSH sessions now run behind a detachable PTY daemon that keeps the session alive across reconnects, so a dropped network connection no longer kills your remote workspace.
The sidebar workspace font size and the workspace tab bar font size (capped at 14pt) are both configurable. The notifications popover was redesigned bigger and more minimal with swipe-to-dismiss, and now uses Hermes hook payloads for richer agent notifications.
Fork Conversation moves into the tab right-click menu with configurable destinations, browser tabs gain an audio mute toggle, and `cmux diff` opens a CodeView diff viewer that streams large git diffs before full render.
lauzierj
randybias
windyslow
wzh4464
xzjncucmux workspace-group CLI namespace to create, remove, set-color, set-icon, move, and focus groups, with new-workspace placement configurable per group and via cmux.json (#5018)cmux diff command opens a CodeView diff viewer, with large git diffs streamed into the viewer before full render (#4451, #5016)@Observable drag state and batch sidebar actions for faster reorders on large sidebars (#4736, #4865).ts files as text previews instead of routing them through QuickLook media (#4924)NSFileHandle process pipe read crashes (#4800)Highlighting text in the terminal now copies it to the clipboard the instant the mouse is released. The setting is off by default and toggles from Settings so existing selection behavior stays untouched for anyone who relies on it.
An in-tree preview of the upcoming extension API for custom workspace sidebars. Sample sidebars cover an attention queue, browser stack, dev server status, last prompt, and project worktree views, each rendered through the same provider/reducer surface a third-party extension will use.
The TaskManager panel had a snapshot-boundary violation that retained pane store references inside a lazy list subtree, keeping every entry's `@Published` updates wired to every row. 0.64.10 lifts that state above the list and passes immutable snapshots, so reopening the manager no longer accumulates retained state across sessions.
The browser loading spinner now runs on Core Animation so it stays smooth during heavy rendering, Cmd+Up and Cmd+Down forward into the browser pane (Google Docs jump-to-top/bottom works), the URL bar no longer steals focus on tab switch, and the markdown viewer renders remote SVG images correctly.
`cmux reorder-workspaces` accepts batch input, supports `--dry-run`, and emits reorder events so scripted layouts can plan a full sidebar reshuffle in one call and react to the changes via the socket.
Tab close buttons can now warn before closing or be hidden entirely from Settings, so a stray click on the X stops dropping the surface without confirmation.
gonzaloserrano
jasonko
lawrence703
tiffanysun1app.confirmQuit on stable/nightly (db267718)cmux.json so per-repo configuration can preapprove agent resume invocations (#4538)cmux reorder-workspaces accepts batch input, supports --dry-run, and emits reorder events (#4507)runProcess pipe teardown crash hit when a process exits during stdout drain (#4568)cmux.json split ratios so persisted ratios apply to restored splits (#3980)Git repository search now stops at filesystem root instead of walking forever into `/..`. On older Foundation builds, `deletingLastPathComponent()` could yield `/..` and keep climbing, allocating ever-longer parent paths until the OS OOM killer fired. Non-Git workspaces no longer grow RSS from ~450MB to 8GB within minutes on 0.64.8.
Hidden browser webview renderers discard by default again, reverting the 0.64.8 keep-alive default that exposed the memory regression. The keep-alive behavior remains available as an opt-in setting for workflows that need to preserve DOM state across workspace switches.
Antigravity joins the supported coding-agent lineup with hook notifications, task manager attribution, and Vault session restore, the same way Claude, Codex, Gemini, and Grok already work in cmux.
Grok sessions can now be resumed natively from Vault. cmux parses registered Grok transcripts by layout, deduplicates sessions across shell-Grok homes, and quotes built-in resume commands so they round-trip cleanly.
cmux CLI commands now accept `--window` to scope workspace, pane, surface, SSH, VM, notifications, tree, and top flows to a specific window. Refs resolve inside the targeted window, and cross-window pane handles are rejected before they mutate state.
Capture a screenshot of the current browser pane and copy it straight to the clipboard, ready to paste into an agent conversation or notes.
Reverts the 0.64.7 default of discarding hidden browser webview renderers. Switching back to a hidden browser pane now resumes instantly without reloading. The discard behavior remains available as an opt-in setting.
Fixes for minimal-mode pane tabs moving the window when dragged, Option dead-key accent composition (Option+n then a now commits "ã"), equalize splits with 3+ panes, Quick Look preview crashes, git index.lock polling, theme override paths leaking from channel builds, sidebar overlay contrast, terminal scheme synchronization on theme reload, restored unread badges, transparent terminal hosting, browser navigation race conditions, and session search ripgrep cancellation crashes.
kallioaleksi
Luciferxie--window routing for window-scoped CLI commands (workspace, pane, surface, SSH, VM, notifications, tree, top) (#4211)Grok Build joins the supported coding-agent lineup with notifications, task manager attribution, and session restore, the same way Claude, Codex, and Gemini already work in cmux.
Hidden browser webviews can now discard their renderer process to release memory and reappear instantly when you switch back. CLI-created browser panes preload offscreen so the page is ready the moment the workspace becomes visible. Thanks @lidge-jun for the community contributions.
New socket commands let you fork an agent conversation off its current turn, so you can branch into a what-if without losing the original thread.
When cmux logs a crash, the notification now opens directly into the crash diagnostics view so you can inspect the breadcrumb trail without digging through state.
Fixes for browser deep-link popups (slack://, discord://, zoom://), Cmd-click reload duplicating browser tabs, omnibar arrow key focus races, light-theme foreground rendering with conditional themes, Cmd-hover bounds for spaced file paths, markdown viewer image rendering, surface tab bar action button clipping, task manager attribution, SSH pane sibling kills, background workspace PTY startup, browser IME candidate windows for Japanese / Zhuyin, ripgrep resolution on Nix installs, and Claude sidebar resume config dir overrides.
moskowebtop (#4243) -- thanks @lidge-jun!cmux open in CLI help (#4206)dark:X,light:Y themes (#4278)CLAUDE_CONFIG_DIR and triggers first-run prompts (#4116) -- thanks @hexalellogram for the report!window.showOpenFilePicker support (#4122) -- thanks @ZhuYichuan for the report!new-workspace commands (#4137)Fixes a critical regression in 0.64.5 where cmux ssh sessions would connect and render the remote prompt but drop every keystroke. The backgrounded ssh inside the startup wrapper now inherits the wrapper's stdin via <&0, so typing reaches the remote shell again. Thanks @kays0x for the community fix.
Boolean Settings rows are now reachable from the command palette, including iMessage Mode. Toggle features without opening Settings.
Reordering a selected workspace now keeps it visible — the sidebar scrolls along so the selected item never disappears off-screen after a move.
cmux vm errors now include actionable next steps: sign-in instructions when not authenticated, suggested fixes for unknown flags, and usage examples for missing arguments.
afterthought
dangaogit
hexalellogram
jmoses26
lidge-jun
Litee
liyue2008
ZhuYichuancmux ssh dropping keystrokes after connecting — the backgrounded ssh inside the startup wrapper now inherits the wrapper's stdin so typing reaches the remote shell (#4135) -- thanks @kays0x for the fix, @kenfdev and @liudp1988 for the reports!cmux codex-teams now maps Codex's subagent sessions into native cmux panes, the same way claude-teams does for Claude Code. Spawned subagents stack in a right column with sidebar metadata and notifications routed through cmux.
A new global search command surfaces windows, workspaces, panes, surfaces, and right-sidebar tools from the menu bar so you can jump anywhere without reaching for the sidebar.
The Markdown viewer now uses a webview-based renderer with richer formatting, better selection, and faster scrolling. Thanks @tobi for the contribution.
The Feed is now enabled by default for new and existing users, surfacing notifications, agent events, and workspace activity in one chronological stream.
Open right sidebar tools as panes, workspace cwd inheritance, an unread defer shortcut, iMessage workspace ordering and previews, and right-sidebar CLI parity. Bug fixes for Korean IME arrows, garbled Chinese paste, Metal renderer crashes, terminal portal resize lag, multi-monitor sleep/wake window position, and Cloud VM SSH attach.
kays0x
kenfdev
liudp1988codex-teams sessions into native cmux panes (#4056)cmux open and file.open into markdown preview panels instead of generic file preview panels (#4085)/clear (#3631)cmux --help that reload-config covers Ghostty config too (#4060)window.open(_blank) without features as a tab instead of a popup (#3245) -- thanks @azu for the report!The Files sidebar now follows SSH workspaces and shows the remote root instead of the local macOS path. SSH workspace descriptors restore on relaunch, and new guarded cmux://ssh deep links prompt before launching ssh so unfamiliar links can't run arbitrary commands.
Pi sessions now restore across relaunch via Vault, and Hermes Agent hooks pipe into the sidebar like Claude, Codex, OpenCode, Gemini, and Rovo Dev. Per-agent toggles let you hide individual agent session restores from Vault.
A new cmux browser cookies import CLI brings cookies from other browsers into cmux's browser panes so logged-in sessions follow you over.
Welcome sidebar toggle shortcuts, Insert Path and Insert Relative Path in the file explorer right-click menu, a warnBeforeClosingTab toggle to opt back into the close confirmation prompt, plus fixes for IME, command palette Escape, modified Backspace in the omnibar, and stale terminal colors after theme switches.
abdelibrahim-hh
al3kaz
azu
bcb225
comp615
michaellopez
mikesmitty
psh4607
rursache
tobiwarnBeforeClosingTab close-warning toggle to opt back into the close confirmation prompt (#2808) -- thanks @dandaka for the report!cmux browser cookies import CLI for bringing cookies into cmux browser panes (#3770)cmux://ssh deep links that prompt before launching SSH (#3677)cmux signin and cmux signout work without the auth prefix.cmux.json reload (#3847)
Clean-Cole
dandaka
flatsponge
garizs
lederniermagicien
Lots-ninety-nine
mfn
yuanganaicmux config CLI with cmux config doctor for validating cmux.json without a socket, plus cmux config path, cmux config docs, and cmux config reload aliases (#3454)ANTHROPIC_BASE_URL and ANTHROPIC_AUTH_TOKEN through terminal startup (#3564)Closing the last window with the red X no longer drops your work. cmux restores prior panes on relaunch and resumes Claude Code, Codex, OpenCode, Gemini, and Rovo Dev sessions where you left off.
Sign in to passkey-protected sites directly inside cmux browser panes. Reworked inside-out signing keeps the notarized Developer ID build compatible with macOS authentication services.
A Finder-like file explorer sidebar with full SSH support so remote workspaces get the same tree view as local ones.
A built-in Task Manager window plus cmux top CLI shows a live snapshot of windows, workspaces, panes, surfaces, and browser webviews, with jumps from the manager into the matching surface.
hyi1233
ibagur
streeytcmux top CLI for window, workspace, pane, surface, and browser webview snapshots (#3290, #3471)setup-hooks (#2717)cmux.json the canonical settings file with JSONC parsing and legacy settings.json fallback (#3409, #3424)cmux.json workspace and tab bar plus-button actions (#3084, #3348)skills.sh install flow (#3402)--layout parameter on workspace.create for programmatic split layouts (#2916) -- thanks @talldan!/llms.txt index for agent consumption (#3410)ZDOTDIR overrides the wrapper (#2778) -- thanks @michaeljauk!DebugEventLog NSFileHandle ObjC exception crash (#3034)window.open(_blank) routing in browser panes (#3262)settings.json (#3462)LocalCommand incompatibility with Fish shell (#3506, #3534)cmux.json named workspace colors (#3149)
dasanworld
dezren39
ivanrvpereira
jaynora2026
michaeljauk
say8425
SeongJaeSong
talldancmux omx and cmux omc agent integrations (#2619)ls output (#2294)split-window surface resolution (#2351)new-split falling back to the focused surface when the target is stale (#2518) — thanks @anusheel!C insertion from Speakly dictation (#2413)/ and ? on ABC-QWERTZ keyboard layouts (#2447)TERM to xterm-256color (#2613)claude through the bundled wrapper (#2465)claude_vm_node OOM behavior and hook payload retention (#2462)k formatting (#2473)
anusheeldisplayIfNeeded crash during layout follow-up from SwiftUI geometry changes (#2305) — thanks @KyleJamesWalker!cmux ssh user@remote creates a workspace for a remote machine. Browser panes route through the remote network so localhost just works. Drag an image into a remote session to upload via scp. Coding agent notifications come home to your local sidebar. Reconnects on drops.
cmux claude-teams launches Claude Code's experimental teammate mode with one command. It sets up the environment, fakes a tmux session, and translates tmux commands into native cmux splits. Teammates stack vertically in a right column with sidebar metadata and notifications.
cmux omo integrates oh-my-openagent (formerly oh-my-opencode), which orchestrates specialist agents across Claude, GPT, and Gemini in parallel. Same tmux shim as claude-teams, auto-installs the plugin, notifications route through cmux.
Import cookies, history, and sessions from Chrome, Arc, Brave, Firefox, Safari, and 20+ browsers. The import wizard detects installed browsers, lets you pick profiles, and injects everything into cmux's browser panes so you're already logged in.
Hide the titlebar for a distraction-free terminal. Controls move to the sidebar and appear on hover. Toggle from the command palette or Settings.
Define project-specific actions in cmux.json that launch from the command palette. One file per repo, no global config needed.
KyleJamesWalkerwindow.open() popup windows in browser panes with shared OAuth context (#1150, #1600)cmux.json custom commands — define project-specific actions launched from the command palette (#2011, #2122)cmux omo command for oh-my-openagent integration (#2087, #2230, #2280)send-key CLI — ctrl+enter, shift+tab, arrow keys, home/end/delete/pageup/pagedown (#1994, #1920)--name flag for new-workspace CLI command (#2160)--no-focus flag for cmux ssh (#2227)--direction flag for markdown open command (#1763)cmux tree output (#2040)set-color / clear-color workspace actions for tab color via CLI (#1873, #1833)rc and remote-control added to command passthrough (#1539)CMUX_SOCKET alongside CMUX_SOCKET_PATH in terminal env (#1991)EXC_BAD_ACCESS caused by over-releasing Ghostty font (#1496)background-opacity and background-blur to terminal rendering area (#1858)resize_split keybind support (#1899)count windows returning 0 and working directory returning empty (#1826)_cmux_send to prevent "OK" leak (#1619)-r shorthand to skip session ID check in Claude wrapper (#1992)sidebar-background, sidebar-tint-opacity) (#1465)cmux themes command with bundled Ghostty themes (#1334, #1314)Open Markdown files in their own panel and keep them live with file watching. Notes, READMEs, and docs refresh automatically as the file changes on disk.
Browser panels now support Cmd+F with inline find controls, so you can search long docs, dashboards, and issue threads without leaving cmux.
Terminal scrollback now has a keyboard copy mode with vi-style navigation, making it much easier to inspect and copy from large output buffers.
Choose from bundled sounds or pick your own audio file so background task notifications are easier to notice and easier to personalize.
cmux now includes Japanese plus 16 additional languages, and a per-app language override lets you change the UI language without changing macOS system settings.
cmux tree command for full CLI hierarchy view (#592)cmux CLI from the command palette (#626)background-opacity across all cmux chrome (#667)feedback@manaflow.com (#1007)ghostty_surface_refresh after sleep/wake (#432, #619)SentrySDK.start (#927)window.open() and target=_blank not opening in a new tab (#693)
Right-click any workspace in the sidebar to assign it a color. There are 17 presets to choose from, or pick a custom color. Colors show on the tab itself and on the workspace indicator rail.
Hit Cmd+Shift+P to open a searchable command palette. Every action in cmux is here: creating workspaces, toggling the sidebar, checking for updates, switching windows. Keyboard shortcuts are shown inline so you can learn them as you go.
You can now open your current directory in VS Code, Cursor, Zed, Xcode, Finder, or any other editor directly from the command palette. Type "open" and pick your editor.
Pin a workspace to keep it at the top of the sidebar. Pinned workspaces stay put when other workspaces reorder from notifications or activity.
The sidebar now shows richer context for each workspace: PR links that open in the browser, listening ports, git branches, and working directories across all panes.
0xble
afxjzs
AI-per
atani
atmigtnca
cheulyop
ConnorCallison
harukitosa
homanp
JLeeChan
josemasri
novarii
orkhanrz
qianwan
rjwittams
sminamot
tmcarr
trydis
ukoasis
y-agatsuma
yasunogithubcmux --version output now includes commit metadata
Right-click any tab in a pane to rename it, close tabs to the left or right, move it to another pane, or create a new terminal or browser tab next to it. You can also zoom a pane to full size and mark tabs as unread.
The embedded browser now has full WebKit DevTools. Open them with the standard shortcut and they persist across tab switches. Inspect elements, debug JavaScript, and monitor network requests without leaving cmux.
When a background process sends a notification (like a long build finishing), the terminal pane shows an animated ring so you can spot it at a glance without switching workspaces.
Full IME support for Korean, Chinese, and Japanese. Preedit text renders inline with proper anchoring and sizing, so composing characters works the way you'd expect.
Claude Code integration is now enabled by default. Each workspace gets its own routing context, and agents can read terminal screen contents via the API.
avisser
gnguralnick
ijpatricio
jperkin
jungcome7--help flag on CLI subcommands (#128)--command flag for new-workspace CLI command (#121)rename-tab socket command (#260)setup.sh cache rebuild and stale lock timeout (#217)CMUX_WORKSPACE_ID environment variable so background agents target their own workspace instead of the user's focused workspacesurface:1, pane:2, workspace:3)send and send-key support --workspace and --surface flags for explicit targeting\n, \r, \t) in send payloads are now handled correctly--id-format flag is respected in text output for all list commandsclose-surface rejecting cross-workspace surface refs--window flag being overridden by CMUX_WORKSPACE_ID environment variable--resume, --continue, and --session-id flagsCmd+L now reliably refreshes/selects-all and supports immediate typing without stale inline textThe sidebar now displays git branch, listening ports, log entries, progress bars, and status pills for each workspace.
browser open now targets the caller's workspace by default via CMUX_WORKSPACE_ID0.27.0 could fail to detect newer releases because release build numbers were behind the latest published appcast build numberSUPublicEDKey / SUFeedURL already existed in Info.plistReceive Nightly Builds)main when new commits are availableclipsToBounds default changecom.cmuxterm.app for consistencycom.cmuxterm.app for Sparkle update continuity)set-status command not properly quoting values or routing --tab flag--panel flag for new-split command to control split pane placementbrew install --cask cmux)