MoonlightC

Every AI in one place: cloud models, local models, creative tools and your own computers. Free and open source (MIT). Bring your own keys; nothing is resold and there are no caps from us.

What it does

• Chat with any model: Anthropic, OpenAI, Google, xAI, Mistral, DeepSeek, Groq, Together, Perplexity, Cohere, OpenRouter or any OpenAI-compatible server. Model lists come live from each provider. Stop, edit, regenerate, branch, an Auto model that picks the right model per message, attachments, artifacts (live HTML/SVG/React), Python in the browser, web search, Deep Research, voice typing, modes and a Private mode that saves nothing.
• Studio: images, video and voices with your fal, OpenAI, Google, xAI, Replicate or ElevenLabs keys.
• Connections: any MCP server, with per-tool "ask / always / never" permissions. GitHub with a live stats dashboard.
• Desktop app (Windows, macOS, Linux): local models through Ollama with a Model Store that says whether a model will run on your PC, real terminals with one-click Claude Code / Codex / Gemini CLI / Aider, and My AI Projects.
• Customize: distros, themes and a theme editor, layout options, rebindable shortcuts, and mods.

Chat	Local models	Customize

Use it

• Web: https://moonlightc.vercel.app
• Desktop: https://moonlightc.vercel.app/download

Develop

pnpm install
pnpm dev                                   # web app on http://localhost:3000
pnpm build && pnpm --filter @moonc/web e2e # end-to-end tests (mock AI provider included)
pnpm --filter @moonc/desktop bundle-web && pnpm --filter @moonc/desktop dev   # desktop app

Layout: apps/web (Next.js site + app + API), apps/desktop (Electron), packages/core (providers), packages/mods-sdk (mod manifest + sandbox protocol). See CONTRIBUTING.md and docs/MODDING.md.