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Osaurus for Mac

Local LLM server and AI infrastructure with menu bar, CLI, and shared tools.

By osaurus-ai. Free and open source, MIT licence.

Get it with OpenDMG View source on GitHub

Osaurus at a glance

Version
0.25.20
Released
8 October 2026
Download size
79 MB
Works on
Apple silicon and Intel
Licence
MIT
Category
Artificial Intelligence
Developer
osaurus-ai
GitHub stars
8K

About Osaurus

Own your AI. The native macOS harness for AI agents -- any model, persistent memory, autonomous execution, cryptographic identity. Built in Swift. Fully offline. Open source.

Screenshots

Osaurus screenshot 1

How to install Osaurus on a Mac

  1. Get OpenDMG. It is a free app store for open source Mac apps. Download OpenDMG.
  2. Search for Osaurus and press Get. OpenDMG downloads version 0.25.20 from osaurus-ai's own GitHub release.
  3. Open it. The download is checked against its SHA-256 fingerprint and its signature is checked on your Mac before it lands in Applications.

Updates to Osaurus show up in OpenDMG and install with one button. No account is needed.

Prefer to do it by hand? The developer's file is on GitHub: Osaurus.dmg (79 MB).

What is new in Osaurus 0.25.20

## What's Changed

- Add calculate built-in tool for exact math (#3039) by @jjang-ai
- Say why images are unavailable instead of dropping a pasted image (#3021) (#3040) by @jjang-ai
- harden the phone's secure channel and pairing, and expand phone image generation (#3044) by @RaajeevChandran
- Consume merged tool-stream and K2 runtime fixes (#3046) by @jjang-ai
- Clarify judge polarity and ScreenContext rubric while preserving verdict gating (#3033) by @jjang-ai
- Compaction turns reasoning off in a form self-hosted servers read (#3036) (#3042) by @jjang-ai
- move agent action bar back out of the actions tab (#3045) by @RaajeevChandran
- Host MCP servers see version-manager toolchains (#3024) (#3038) by @jjang-ai
- Model RAM estimates exclude the SSD-resident n-gram table (#3043) by @jjang-ai
- Expose bundle-aware speculative defaults before model load (#3029) by @jjang-ai
- Support local grammar-constrained JSON Schema output (#3028) by @jjang-ai
- send the native mtp option to the phone's model picker for bundles with an mtp head (#3020) by @RaajeevChandran
- Integrate K2-Horizon runtime and native reasoning contracts (#3019) by @jjang-ai
- only show a pairing code while the server is running (#3018) by @RaajeevChandran

## 🚀 Features

- move agent action bar into its own actions tab under general (#3041) by @RaajeevChandran

## 🐛 Bug Fixes
…

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