v0.3.0 · free & open source · MIT

One native workspace for every AI coding agent

Onyx wraps Claude Code, Codex, Gemini CLI and Kimi Code in a single Rust-native GUI — with Git, terminal, diffs, provider chats and system-wide voice built in.

Download for free Star on GitHub

macOS · Windows · Linux — bring your own provider logins

Onyx — my-project
Refactored auth/session.rs — moved token refresh into a dedicated middleware. Running tests
✓ 42 passed · 3 files changed · +128 −64
› Ask, plan, or build ⏎ send
Works with your logins
Claude Code
Codex · ChatGPT
Gemini CLI
Grok
Kimi Code
OpenRouter
Claude Code
Codex · ChatGPT
Gemini CLI
Grok
Kimi Code
OpenRouter
// killer feature

Talk to your machine.
Anywhere. Any app.

Onyx listens system-wide. Dictate straight into your editor, terminal or browser — or summon a full voice agent that speaks back. No window focus required.

  • ⌨
    Dictation mode
    Hold Ctrl + Shift and talk — words stream into whatever app is focused.
  • ◍
    Voice agent mode
    Hold Ctrl + Option for a hands-free agent with "Speak responses" — it talks back.
  • ⚙
    Your models, your voices
    Separate dictation, agent and speech models. Floating HUDs and a tray launcher keep it out of the way.
Listening…
"refactor the auth module and run the tests"
HUD
dictation · whisper agent · gpt-5 voice · nova

Everything in one window

Stop juggling terminals and browser tabs. Onyx normalizes every agent's events into one consistent, fast UI.

◈

Every agent, one GUI

Run Claude Code, Codex, Gemini CLI and Kimi Code side by side. Onyx reuses each tool's own login and runtime — nothing to reconfigure, nothing replaced.

⑃

Git, terminal & diffs built in

Working-tree changes, branch switching, commit & push, file tree, integrated terminal and an in-app browser — no context switching.

⌁

Prompt rail navigation

Long sessions stay navigable. Compact markers per prompt with hover previews and click-to-jump, plus steering, approvals and Build/Plan controls.

◉

Provider chats in-app

ChatGPT, Claude, Gemini and Grok open in internal webviews that keep your own sign-ins — plus a native OpenRouter route with model discovery and web search.

◍

Global voice

System-wide dictation and a hands-free voice agent with floating HUDs — Onyx hears you in any app, not just its own window.

▣

Local-first & private

Sessions, history and preferences live on your machine. API keys stay in the OS credential manager. Optional cloud sync when you want it.

// under the hood

Rust-native. End to end.

Built on Tauri 2 with a Leptos + WebAssembly frontend — a tiny footprint, instant startup and signed auto-updates. One language, from shell to UI.

Rust Tauri 2 Leptos WebAssembly Tailwind 4

Free. Open source. Yours.

MIT-licensed. Bring your own provider subscriptions or API keys — Onyx never sits between you and your agents.

macOS
.dmg · universal
Windows
.msi · x64
Linux
.AppImage · .deb

Independent project — not affiliated with Anthropic, OpenAI, Google, Moonshot or xAI.