#1515th of 29 in Coding agents and assistants

cmux

Native macOS terminal with vertical tabs and agent notifications

Live demo ↗ Documentation ↗ Website ↗ Repository on GitHub ↗

Stars: 28.1k
License: custom license
Last commit: Oct 2026
Last release: Oct 2026
Language: Swift

Checked 13 Oct 2026 on GitHub.

Overview

cmux is a Swift/AppKit macOS terminal built on libghostty that reads your existing Ghostty config. It adds a sidebar showing git branch, PR status, working directory and ports per workspace, plus notification rings driven by OSC 9/99/777 sequences or `cmux notify` from agent hooks. It also has an in-app scriptable browser, SSH workspaces, and a CLI and Unix socket API.

Who it is for: macOS developers running several terminal coding agents in parallel

Strengths

Native Swift/AppKit app, not Electron; libghostty rendering and reads existing Ghostty config
Works with any agent that runs in a terminal; hooks for Claude Code, Codex, OpenCode and others
Everything scriptable through CLI and Unix socket, including browser automation and split panes
Session restore of layout, scrollback and supported agent sessions via `cmux hooks setup`

Weaknesses

macOS only; no Linux or Windows build
License detected as NOASSERTION; README says GPL, so check terms
Does not checkpoint live processes; needs opt-in tmux or zellij for detach/reattach
iOS companion is beta, with early access tied to the Founders Edition

What it needs

Needs libghostty, Sparkle (auto-update)
Models: Claude Code, Codex, OpenCode, Gemini CLI, Amp

Also in Coding agents and assistants

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2	opencodeTerminal coding agent with build and plan modes, plus a desktop app213.1k starsMIT	79 out of 100
3	orcaDesktop app that runs CLI coding agents in parallel git worktrees91.2k starsMIT	77 out of 100
#4	oh-my-openagentTerminal coding agent that fans work out across many models70k starscustom license	77 out of 100
#5	openinterpreterTerminal coding agent, a Codex fork tuned for low-cost models68.6k starsApache-2.0	76 out of 100

How to choose

Check which models it can use: your own keys, local models, or only the vendor's.
See what it may do without asking (edit files, run shell, push) and how you approve.
Prefer agents that work in a branch or worktree you can throw away.

Health

Releases: 56 in the last 12 monthsLast one yesterday
Top contributor: 39% of commits7,345 of 18,737 in the last 12 months
Security advisories: NoneOn GitHub, in the last 12 months
OpenSSF Scorecard: Not checked

Read from GitHub, deps.dev and OpenSSF on 13 Oct 2026. Bots and coding-agent accounts are left out of the commit counts. Not part of the score: how we check.

License in plain words

custom license Custom terms

Use it at work: Check
Change it and rebrand it: Check
Sell it or host it for others: Check

Your part: GitHub could not match these terms to a standard license. Read the license before you use it at work, rebrand it or host it for others.

A plain summary, not legal advice. Read the license on GitHub ↗ (opens in a new tab)

For maintainers

Show this rank in your README. It updates twice a day.

[![Archestack](https://archestack.com/badge/manaflow-ai/cmux.svg)](https://archestack.com/best-of-vibe-coding/projects/cmux/)

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Best of Vibe Coding on GitHub

Each review comes from the project's README and facts we check on GitHub. The fix form opens with cmux filled in.