repository · locator & rights
22ae1c56fd83103e2d9c80ec3341a9a08557e6e1
README feature sections; license and limitations at this pinned revision.
Authored summary and link only; upstream rights retained.
Terminal manager / PRODUCT DOSSIER
cmux
A terminal and browser workspace with agent attention signals.
macOS · local & SSH · Not established · README says GPL; exact license scope needs reviewRevision 2026-09-13.4 · unreviewedNeeds recheck · recheck 2026-10-130 attestations · checked 2026-09-13
What we do not know yet · 2 open gaps
- Ordinary process memory is not checkpointed during session restore.
- README calls the project GPL-licensed; exact license terms need separate review.
Applies to: Repository documentation at 22ae1c56fd83103e2d9c80ec3341a9a08557e6e1; Unpinned public documentation and/or pinned README sections reviewed 2026-09-13; per-claim source scope applies. · Documentation review only
Applicability, 3 recheck triggers & verification plan
Applicability
Repository documentation at 22ae1c56fd83103e2d9c80ec3341a9a08557e6e1; Unpinned public documentation and/or pinned README sections reviewed 2026-09-13; per-claim source scope applies.
Documentation review only
Excludes: Runtime behavior; Performance comparisons; Security guarantees
Recheck when
- Documentation changes
- New product release
- License change
Needs recheck · due
Verification plan
- Pin a product release or repository commit and record the host environment.
- Create a disposable repository with a passing baseline test.
- Run a bounded change with two agents where supported; record permissions and logs.
- Record a failed attempt, actual outcome, and artifacts without secrets.
- Have another person reproduce the result before labeling it reproduced.
Provenance & review
Testedknowhow initial research
Commissioned by a Nimbalyst maintainer; not an independent comparison.
Revision 2026-09-13.4 · unreviewed · checked
0 attestations · Content: Unlicensed prototype; redistribution decision pending
Capability claims · 13 / 46 sourced
Standing condition: these are documentation claims at the source capture date, with outcome “claimed”; no runtime execution is recorded. Dossier applicability and limitations apply throughout. Expand a row for its statement, specific scope and contradictions. Numbered citations resolve to the source locator and capture date below. Missing evidence means Unknown, not No. Sources are unpinned unless marked “Pinned”; this marks source stability, not stronger support or runtime verification. Reuse counts refer to claims in the full dossier; repeated citations do not represent independent sources.
Yes Documented within scope Partial Limited form of the feature No Explicit evidence of absence Unknown No evidence recorded. These are support assessments, not quality scores or runtime verification.
Orchestration
Parallel agentsYes
Explore Parallel agents →
Organizes concurrent agent terminals in tabs and splits.
Agent choiceYes
Explore Agent choice →
Integrates hooks for multiple coding-agent CLIs.
Attention notificationsYes
Explore Attention notifications →
Highlights panes when agents need attention.
Agent coordination
Agent delegationYes
Explore Agent delegation →
Claude teammates appear as native terminal splits.
Scope: Delegated to Claude Code teams; requires compatible runtime and integration.
Agent messagingYes
Explore Agent messaging →
Integrated Claude Code teammates communicate through the runtime.
Scope: Composed documentation inference: cmux enables experimental Claude teams; messaging is Claude runtime behavior, not native cross-provider routing.
Workstream groupingYes
Explore Workstream grouping →
Groups agent and teammate panes within workspaces.
Scope: Terminal pane grouping; not shared conversation context.
Session continuity
Session resumeYes
Explore Session resume →
Restores supported agent sessions using saved native IDs.
Restart recoveryPartial
Explore Restart recovery →
Restores layout and resumes supported agents using saved native IDs.
Scope: Hooks required for agent resume. Arbitrary live processes are not checkpointed.
Work surface
Terminal accessYes
Explore Terminal access →
Uses Ghostty-based terminal rendering.
Browser interactionYes
Explore Browser interaction →
Includes a browser with an agent-facing control API.
Context & models
Skills & custom agentsYes
Explore Skills & custom agents →
Defines project actions in cmux.json.
Execution & access
Remote executionYes
Explore Remote execution →
Creates remote SSH workspaces.
Programmatic controlYes
Explore Programmatic control →
Exposes CLI and socket control for workspaces and browser.
Unknown · 33 capabilities without evidence
- Git worktrees →
- Task management →
- Automations →
- Session lifecycle board →
- Session branching →
- Prompt queues →
- Session import & export →
- Context usage visibility →
- Usage & cost reporting →
- Change review →
- Git operations →
- Pull request workflow →
- Checkpoints & rollback →
- Selective change approval →
- Merge & conflict assistance →
- Visual authoring →
- Code editing →
- Rich document authoring →
- Visual selection context →
- Voice interaction →
- MCP tools →
- Project instructions →
- Model choice →
- Local models →
- Project memory & retrieval →
- Extension SDK →
- User-owned credentials →
- Self-hosting →
- Mobile access →
- Team collaboration →
- Tool permissions →
- Remote agent control →
- Team roles & access →
Interface images & local attachments
Sources · 3
vendor-documentation · locator & rights
Usage and experimental-team configuration.
Authored summary and link only; upstream rights retained.
vendor-documentation · locator & rights
Introduction; Messages between agents; experimental limitations.
Authored summary and link only; upstream rights retained.