workflowstacks
voice-ai

cmux – Streamline AI‑Coding Workflows in macOS Terminal

A Swift‑powered terminal with vertical tabs and real‑time notifications, letting founders run multiple AI coding agents side‑by‑side. Ideal for macOS power users. 28k+ GitHub stars.

From the repo · “Open source Ghostty-based macOS terminal with vertical tabs and notifications for AI coding agents. Built for multitasking, organization, and programmability.”

intermediate⏱ 1-2 hours💵 Free (self-hosted)
28,337 stars+158★ this week2,567 forksSwiftGuide quality 8/10 · reviewed Oct 5Updated 10/22/2026100% free · open source
What it is

Use cmux to create a custom AI-powered command line in your Mac terminal.

Real use case example

"A solo developer is working on multiple projects and wants to stay organized. By setting up cmux, they can create a custom terminal interface with vertical tabs and notifications. They can then use AI coding agents, like codex, to automatically suggest lines of code and review their work. This lets them focus on their projects' logic instead of spending time writing code."

Best insideClaude CodeCodex CLI
When to use it
  • •You need to manage multiple AI coding agents simultaneously
  • •You want to receive notifications for AI coding agent activities
  • •You prefer a terminal with vertical tabs for better organization
Ready-to-paste prompt
cmux --new-tab --agent myAI --command 'echo Hello World!'
Heads up: Ensure you have the latest version of Swift installed, as cmux is built with Swift and may not be compatible with older versions
Saves to your device
Use with Claude
New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

✅ Light setup

Installs with a command or two; your AI agent can do it for you.

Try it instantly — no install
Claude Code
mkdir -p ~/.claude/skills/cmux && curl -fsSL https://workflowstacks.com/api/skills/cmux/claude-skill -o ~/.claude/skills/cmux/SKILL.md
Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)
claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

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How cmux – Streamline AI‑Coding Workflows in macOS Terminal works
Codeflow
Free to inspect

Cmux – Streamline AI‑Coding Workflows in macOS Terminal is a very large Swift project (~2.3M lines across 10008 code files, plus 2241 test files). Setup is light: installs like a normal app. Reading the code is optional. Last commit this month, Other license, has a test suite.

Size
Very large codebase
~2.3M lines · 10008 code files · days to read — use, don't read
Setup
One-command install
Installs like a normal app. Reading the code is optional.
Runs on
Node.js
No API keys detected
Swift 64%Rust 15%TypeScript 7%Python 5%Java 2%
Where to start reading
  1. 1
    README.md
    Start here — what it does and how to install it
  2. 2
    AGENTS.md
    The instructions the AI actually follows
  3. 3
    agent-chat/server.ts
    Where the program starts running
  4. 4
    package.json
    Dependencies and the commands it exposes
  5. 5
    skills/cmux-architecture/SKILL.md
    Inside skills/ — an example of what the AI is told to do
What's in each folder
skills/Prompts, skills & agent definitions81 files
Packages/Sub-packages / plugins6099 files
web/Frontend / UI980 files
CLI/Command-line entry points138 files
workers/Backend / API31 files
services/Backend / API9 files
docs/Documentation66 files
Examples/Examples you can copy52 files
READMEHas testsDocumentedCI checksExamples includedOther licenseUpdated this month
Quick Actions
Details
Creator
manaflow-ai
Language
Swift
Category
voice-ai
Published
1/28/2026

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Featured on WorkflowStacks
[![Featured on WorkflowStacks](https://workflowstacks.com/api/badge/cmux.svg)](https://workflowstacks.com/skills/cmux?utm_source=github&utm_medium=badge)
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