What is Osaurus?
Osaurus is a free, open source AI agents app that runs entirely on your Mac. It runs open models locally on your Apple Silicon chip through Ollama, Apple MLX, or LM Studio, with no internet required and no data leaving your machine. When a task needs a frontier model, you can connect ChatGPT, Gemini, Grok, or Claude and switch back when you’re done. A single shared memory follows you across every model, local or cloud. AI agents built in Osaurus can read and write files, work inside your Mac apps, run on a schedule, and execute tasks in the background. It’s built for developers and technical Mac users who want full control over their AI setup without sending data to third-party servers.
Osaurus Video
Features & Benefits
- Local Model Support: run AI agents offline using Ollama, Apple MLX, or LM Studio directly on your Apple Silicon chip, with no internet required
- Cloud Model Integration: connect ChatGPT, Claude, Gemini, Grok, OpenRouter, Venice, or Liquid AI for tasks that benefit from frontier models
- Unified Memory: carry one persistent memory across all local and cloud models, and import chat history from other AI tools
- Apple App Integrations: read, write, and manage Apple Calendar, Mail, Reminders, Notes, Contacts, Maps, Messages, and Music natively
- File Management: read, write, and organize files and folders, including Excel, PowerPoint, PDFs, and whole directories, with Git support for code projects
- Autonomous AI Agents: build AI agents that run independently with voice control, folder watchers, browser plugins, parallel jobs, and scheduled tasks
- Voice Control: dictate into any app with a global hotkey; transcription runs on Apple’s Neural Engine so no audio leaves your Mac, with read-aloud support included
- Vision and OCR: extract text from images and screenshots entirely on-device
- Computer Use: let AI agents operate Mac apps directly through the accessibility tree and AppleScript, with per-agent opt-in and confirmation gates for sensitive actions
- Code Execution Sandbox: run code in an isolated Linux VM on macOS 26+, built on Apple’s Containerization framework
- Redaction Gate: scan outbound cloud requests for sensitive data, including emails, card numbers, SSNs, and API keys, and replace them with placeholders before anything is sent
- MCP Support: act as both an MCP server and client, with one-click connections to around 25 services including GitHub, Notion, Linear, Stripe, Vercel, and Supabase
- Claude Plugin Support: import full Claude plugins from any GitHub repo, including skills, scheduled agents, slash commands, and MCP providers
- Communication Integrations: connect Slack, Discord, Telegram, iMessage, and WhatsApp for use on the move
- Compatible API Endpoints: expose OpenAI, Anthropic, and Ollama-compatible endpoints at localhost so existing tools can route to a private local model
- Apple Foundation Models: use Apple’s on-device model as a first-class provider on macOS 26+, at zero inference cost
- Cryptographic Agent Identity: assign every agent a cryptographic address with access controlled from your iCloud Keychain master key, with per-agent permission grants and revocation
- Local Image Generation: generate images without sending data to an external service
- No Account Required: download and run with no sign-up, no subscription, no usage caps, and no telemetry on your chats, files, or prompts
What can Osaurus do?
- run AI agents locally on Mac
- automate tasks with AI agents offline
- build autonomous AI agents
- manage files with AI agents
- read and write Apple Mail with AI
- control Mac apps with AI agent
- transcribe voice offline
- redact sensitive data before sending to AI
- run AI without internet
- connect local and cloud AI models
- generate images locally with AI
- execute code in AI agent sandbox
- read text from images with AI
- schedule AI agents to run automatically
- search and manage files with AI
Real-World Applications
Developers building AI-powered tools can point existing OpenAI or Anthropic integrations at a local model running on localhost. Osaurus exposes compatible endpoints, so nothing in the stack needs to change. The MCP client connects to GitHub, Supabase, Vercel, and around 20 other services, and the isolated Linux sandbox on macOS 26+ lets agents run and test code without touching the host system.
Technical freelancers working with client data can run AI agents on sensitive documents without those files ever hitting a cloud server. A consultant analyzing a stack of financial PDFs or a researcher processing proprietary data can set up folder watchers and scheduled agents to do the heavy lifting, with the redaction gate adding a second check on anything that does need to go out to a cloud model.
Mac power users who self-host their own tooling may find Osaurus useful as a local AI backbone. The app runs as a full MCP server, so any MCP-compatible client on the network can use its local tools. Claude plugins import directly from GitHub, and the unified memory means context built up with one model carries over when switching to another.
Writers and content creators comfortable with technical setup can use AI agents to manage research, draft long-form work, and organize large file libraries, all offline. The app integrates with Apple Mail, Calendar, and Notes natively, so agents can pull context from existing workflows without manual copying between apps.
