Osaurus
Open-source macOS agent harness that runs locally with memory and tool execution.
Osaurus is a native macOS harness for local-first AI agents. It runs open models on Apple Silicon, can connect to cloud models when needed, reads and writes files, executes tools, preserves memory, and keeps actions behind approval gates. Builder verdict: a good fit for people who want autonomous desktop agents without sending files and context to someone else's server by default.
What is Osaurus?
Osaurus is an open-source AI agent framework that runs 100% locally on your Mac. It gives developers private, cloud-free AI agents with full local control, eliminating the data-exfiltration risk of cloud-hosted AI. Available as a downloadable DMG, it supports local model execution for tasks like coding assistance, document processing, and workflow automation.
Key features
- 100% local execution — no cloud dependency, no data sent to third parties
- Open source with public GitHub repository (github.com/osaurus-ai/osaurus)
- macOS-native DMG installer for immediate setup
- Supports local LLM integration for coding and productivity tasks
- Full privacy — agent runs on your hardware only
- Extensible agent architecture for custom workflows
Who it's for
- Developers who need AI assistance but cannot risk sending code to cloud services
- Teams building internal AI tooling with sensitive IP that must stay on-premise
- Privacy-conscious builders who want agent-based automation without SaaS subscriptions
- Local-first AI research and experimentation on Mac hardware
When not to use it
If you need GPU acceleration beyond your Mac's capability, real-time multi-user collaboration, or cloud-based model scaling, Osaurus's local-only approach will be limiting. Also, local model performance depends on your Mac's hardware (M-series chips recommended).
FAQ
Is Osaurus completely free?
Yes, it is open source and free to download. You only need your own Mac and locally available models.
What models does Osaurus support?
It integrates with locally runnable open-weight models. Model selection depends on your hardware — M-series Macs handle larger models more efficiently.
How is it different from Cloud AI tools?
Osaurus never sends your data or code to any cloud service. Everything runs on your Mac, giving you full privacy and offline capability.
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