Osaurus
An open-source runtime and local-first UI client for running AI agents.
Quick Keypoints
- Run AI models locally on Apple Silicon using MLX framework.
- Access local-first agents with fixed identity, episodic memory, and facts.
- Control macOS actions (Mail, Git, Calendar, files) securely.
- Integrated MCP (Model Context Protocol) server for third-party tools.
What is Osaurus?
An open-source runtime and local-first UI client for running AI agents.
Osaurus is a free, native macOS application that serves as an AI harness for local and cloud models. Optimized for Apple Silicon, it allows developers to run models like Llama or Mistral locally while keeping their data secure. It provides agents with persistent memory and isolated environments to execute shell commands and code safely.
Who Needs Osaurus?
Developers and privacy-conscious users wanting to run autonomous local AI agents with direct macOS system integrations.
Primary Use Cases
- Autocompleting code syntax and logic blocks in real-time.
- Explaining complex functions and debugging codebase errors.
- Generating boilerplate code and unit test suites automatically.
Important Features
- MLX Framework: Optimized performance specifically for Apple Silicon hardware.
- Security Sandbox: Executes untrusted code inside isolated Linux virtual machines.
- System Plugins: Connects agents directly with Mail, Git, and file systems.
Current Updates About Osaurus
- Added Apple Intelligence on-device model support (macOS 26+), folder watchers, parallel job execution, and MCP support.
- Current Version: v0.22.x
Pricing Plans
| Plan | Price |
|---|---|
| Open SourceCompletely free MIT-licensed native macOS agent harness with no usage caps. | $0 |
Editorial Verification
Independent Testing
This review was audited under our 5-Pillar Testing Framework: Output Quality, UI/UX Ease, Pricing Transparency, Feature Depth, and Support.
Read Our Review Methodology →Explore Related Coding Assistants Tools
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