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Osaurus
FreeOpen SourceSelf-HostedAgentic
Most local AI setups collapse the moment you need one model for code, another for writing, and a third for anything the local model can't handle — with none of them sharing context. Osaurus is a native macOS app built to hold that together without sending a character to a server.
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Get This Tool
License: MIT Any use incl. commercial
Local-run terms: MIT licensed; run, read, modify, and distribute freely on macOS with no vendor involvement required.
Screenshots 1
Summary
Osaurus runs on Apple Silicon via Ollama, MLX, or LM Studio, fully offline — Wi-Fi off, still working. Drop a folder, assign a task, and agents read, write, and execute against your local file system while you're away. When a task outgrows what the local model can handle, you route to ChatGPT, Claude, or Gemini without losing the shared persistent memory thread. The MIT license means no usage caps and no billing — ever. The hard ceiling is macOS exclusivity: teams on Linux or Windows are looking at a different tool from day one.
Bottom line: Bet on this if you're a macOS developer running private, autonomous agents against local files; hit the wall the moment anyone on your team opens a Linux terminal or needs a browser-based interface.
Pricing Plans
FreeFree
Free
MIT licensed, no subscription or usage caps
- Fully offline
- Open source
- No telemetry
View full pricing on osaurus.ai →
Pricing may have changed since last verified. Check the official site for current plans.
Find your fit
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Pros
- Full offline inference on Apple Silicon via Ollama, MLX, or LM Studio, so proprietary code, client files, and unreleased work never touch an external server — removing the legal and compliance exposure that blocks cloud AI adoption in sensitive environments.
- Shared persistent memory across local and cloud models, which means switching from a local Llama model to Claude mid-project does not wipe the context the agent has built — avoiding the restart-from-scratch problem that makes multi-model workflows brittle.
- Agents that read, write, and execute against your local file system autonomously, so you can assign a folder-level task and walk away instead of babysitting a chat interface for an hour.
- MIT license with no usage caps or billing, which means a team of ten can run it indefinitely without a procurement conversation or a surprise invoice when usage spikes.
- No telemetry and no anonymous analytics by the vendor's explicit statement, so the tool does not create a data trail even when it is processing sensitive material.
Cons
- The app requires macOS 15.5+ on Apple Silicon — any developer on an Intel Mac, a Linux workstation, or a Windows machine cannot run it at all. Teams with mixed operating environments are forced to either standardize hardware or adopt a separate tool for non-Apple users, which splits the workflow.
- No documented API means Osaurus cannot be called programmatically as a service component. Teams that want to embed autonomous file-execution agents inside a larger pipeline or expose them to other internal tooling have to fork the Swift codebase and maintain that fork independently.
- Autonomous execution against local files with no described permission sandboxing — the vendor page does not document what guardrails exist when an agent writes or deletes files. Teams running agents against production file paths without understanding the execution scope risk data loss, and the docs available at time of writing offer precious little guidance on scope boundaries.
- Cloud model calls (ChatGPT, Claude, Gemini) require sending task data outside the machine, which partially contradicts the privacy-first positioning for workloads that cannot be split. Teams with strict data residency requirements who need cloud model capability for hard tasks have no private fallback and end up switching to an entirely air-gapped setup or a competitor with an on-prem cloud-equivalent model tier.
About
- Platforms
- macOS (Apple Silicon, macOS 15.5+)
- API Available
- No
- Self-Hosted
- Yes
- Last Updated
- July 14, 2026
Best For
Who it's for
- macOS users seeking fully local AI agents
- Privacy-focused workflows with no telemetry
- Developers building autonomous execution tools
What it does well
- Building autonomous agents that run tasks while the user is away
- Running private offline AI with local models on Apple Silicon
- Connecting multiple model sources with shared persistent memory
- Reading and acting on local files and folders
Integrations
Frequently Asked Questions
- Is Osaurus free?
- Osaurus offers a free option. Hosting, model usage, or optional services may have separate costs; check the pricing details and official terms.
- Is Osaurus open source?
- Yes. Osaurus is open source.
- Can I self-host Osaurus?
- Yes. Osaurus supports self-hosting on your own infrastructure.
- What platforms does Osaurus support?
- Osaurus is available on: macOS (Apple Silicon, macOS 15.5+).
Curated lists that include this category
Cloud AI tools process everything you type on someone else’s server — that’s a non-starter for code containing unreleased IP, client data, or anything that lives under an NDA. Osaurus is a native Swift application for Apple Silicon that keeps inference entirely on-device using Ollama, MLX, or LM Studio as the model backend. The core workflow is: install the app, connect a local model in one click, drop in files or folders, assign tasks, and let agents execute. No account, no telemetry, no round trips.
The differentiating feature is a shared persistent memory layer that spans both local and cloud models. When a task exceeds what a local model handles well, you can reach out to ChatGPT, Claude, or Gemini — and the context built up across local sessions travels with you. That means you’re not starting over when you switch model sources; the agent remembers the environment it has been working in.
The tool fits tightly into one profile: macOS developers or privacy-focused operators who want agents that run autonomously against local files, run offline by design, and cost nothing beyond the hardware. It does not fit teams on mixed operating systems — the vendor page specifies macOS 15.5+ and Apple Silicon with no mention of Linux or Windows support. There is also no API surface documented, which rules out embedding Osaurus as a backend component in a larger service without forking the codebase.
Installation is via a signed .dmg or Homebrew (`brew install osaurus`). The MIT license means teams can fork, modify, and ship derivative builds without licensing friction. The vendor publishes source publicly on GitHub, and community channels exist on Discord and Reddit for coordination outside official docs.
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