Quick answer
Osaurus — Run private AI agents locally on your Mac, no cloud needed. It's freemium. Best for automating personal scheduling tasks by reading and acting on Calendar data.
Osaurus is a free, open-source macOS application that runs AI agents entirely on Apple Silicon hardware, keeping all processing local and away from any cloud service. Built for privacy-conscious Mac users who want the power of AI agents without sacrificing data security, Osaurus leverages the performance of Apple Silicon chips to handle complex agentic workflows directly on your device. The app integrates natively with macOS features including Calendar and Contacts, enabling agents to read your schedule and personal data while keeping that information entirely on-device. Osaurus also supports sending iMessages and executing sandboxed code, with a built-in approval gate that gives users full control over what actions the agent is allowed to take. Persistent memory lets agents retain context across sessions, making them more useful over time without relying on external servers. Licensed under the MIT open-source license, Osaurus is ideal for developers, power users, and anyone who values digital privacy and wants a capable local AI agent that respects their boundaries.
Key features
- 100% local inference on Apple Silicon with no cloud dependency
- Native macOS integrations including Calendar, Contacts, and iMessages
- Sandboxed code execution with a user-controlled approval gate
- Persistent cross-session memory for contextual continuity
Pros & cons
- +Complete privacy since all processing stays on-device with no cloud requirement
- +Fully free and open-source under the permissive MIT license
- +Deep native macOS integration for a seamless agentic experience
- −Requires Apple Silicon hardware, limiting use to newer Mac devices only
- −Cloud pricing for the optional Osaurus Cloud tier is not publicly available
Pricing
Fully free and open-source (MIT license)
Pay-as-you-go (pricing on request)
Contact for details
Who is it for
- →Automating personal scheduling tasks by reading and acting on Calendar data
- →Running privacy-sensitive AI workflows without exposing data to third-party servers
- →Executing and testing sandboxed code snippets directly from an AI agent on your Mac
Frequently asked questions
Is Osaurus free?
Yes, Osaurus is completely free and open-source under the MIT license. You can download, use, and modify it at no cost. An optional Osaurus Cloud tier exists for extended features, but pricing for that is available on request.
What is Osaurus best used for?
Osaurus is best used for running AI agents locally on a Mac without sending any data to the cloud. It excels at privacy-sensitive automation tasks like managing calendar events, sending iMessages, and executing sandboxed code, all under user supervision.
What are the best alternatives to Osaurus?
Alternatives include Ollama for local model hosting, LM Studio for a GUI-based local AI experience, and Jan.ai for a fully local AI assistant. For cloud-based agents, tools like AutoGPT or CrewAI are popular but do not offer the same on-device privacy guarantees.
Is Osaurus safe to use?
Osaurus is designed with safety in mind. It runs entirely on your local device with no cloud dependency, and any agentic action such as running code or sending messages must pass through a user-controlled approval gate before execution. Being open-source also means the code can be independently audited.
How much does Osaurus cost?
The core Osaurus app is free and open-source with no charge. An optional Osaurus Cloud add-on is available on a pay-as-you-go basis, but specific pricing is not publicly listed and must be requested directly from the Osaurus team.
Reviews
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