A native desktop GUI for GitHub Copilot, built on the Copilot SDK.
- A GitHub Copilot subscription
- GitHub CLI installed and authenticated — run
gh auth loginif you haven't already
Download the latest release from the Releases page:
| Platform | File | Notes |
|---|---|---|
| macOS (Apple Silicon) | Cooper-<version>-mac-arm64.dmg |
Signed and notarized |
| Windows (x64) | Cooper-<version>-win-x64-Setup.exe |
Installer |
Note: Cooper is an open-source project, so release executables are not officially code-signed. Your OS may show a warning on first launch. If you prefer, you can build from source below.
Build from source
Requires Node.js 22+.
macOS:
git clone https://github.com/CooperAgent/cooper.git && cd cooper && npm install && npm run distWindows:
git clone https://github.com/CooperAgent/cooper.git; cd cooper; pwsh -NoProfile -File .\scripts\setup-windows.ps1; npm run dist:win- 🗂️ Tabbed Sessions — Multiple conversations, each with its own working directory and model
- 🌳 Git Worktree Sessions — Paste a GitHub issue URL → isolated worktree + session
- 🔁 Ralph Wiggum — Iterative agent mode: set completion criteria, let it loop until done
- 💻 Embedded Terminal — Real PTY per session, one click to attach output to your prompt
- 🎤 Voice Input/Output — Speech-to-text and text-to-speech
- 🔌 MCP Servers — Model Context Protocol for extended tool capabilities
- 🎯 Agent Skills & Subagents — Personal and project skills via
SKILL.md,.agent.md, and subagent delegation - 🤖 Model Selection — Dynamic model list with favorites — GPT-5.2, Opus-4.6, Sonnet, Haiku, Gemini, and more
- ⚡ YOLO Mode — Auto-approve tool calls for uninterrupted agent flow
npm install && npm run devSee CONTRIBUTING.md for details.
Join our Discord to report bugs, request features, and chat.
MIT