Open sourceSwift · ≈8.1k stars · MIT
Osaurus
Native, offline-capable macOS harness for personal agents.
Osaurus is an open-source AI harness for macOS built in native Swift for Apple Silicon. It sits between the user and any local or cloud model and keeps agents, memory, tools and identity on the user's machine. Each agent has its own prompts, memory and theme; tools and skills are selected via RAG, and the project lists persistent memory, autonomous execution and cryptographic identity among its features. It works fully offline with local models (an optional build bundles a ~4 GB model) and requires macOS 15.5+. Its site notes a Windows public beta.
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Connections
Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.
Maintained by · 1
- OsaurusOrganisation
Sources
Verified Oct 29, 2026