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Issue 001 / A living technical almanac

Rankings never sold

Agent Infrastructure · Head-to-head

osaurus vs registry

osaurus and registry are both agent infrastructure. osaurus is Own your AI. The native macOS harness for AI agents -- any model, persistent memory, autonomous execution, cryptographic identity. Built in…, while registry is a community driven registry service for Model Context Protocol (MCP) servers. Here's an independent, side-by-side look at how they compare — and which fits.

osaurus

Infrastructure· Open source

Own your AI. The native macOS harness for AI agents -- any model, persistent memory, autonomous execution, cryptographic identity. Built in…

Visit osaurus
registry

Infrastructure· Open source

A community driven registry service for Model Context Protocol (MCP) servers.

Visit registry

Bottom line

osaurus and registry are both open-source agent infrastructure you can self-host for free. osaurus is written primarily in Swift; registry in Go. Neither is universally better — pick by fit.

Side by side

Specosaurusregistry
TypeInfrastructureInfrastructure
ModelOpen sourceOpen source
PricingOpen sourceOpen source
GitHub stars6,8926,998
LanguageSwiftGo
LicenseMIT
Last activityJul 2026Jul 2026

Key differences

  • osaurus is written primarily in Swift; registry in Go.

Choose osaurus if

your team works primarily in Swift.

Choose registry if

your team works primarily in Go.

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.

Full osaurus profile →

About registry

A community driven registry service for Model Context Protocol (MCP) servers.

Full registry profile →

Frequently asked

What's the main difference between osaurus and registry?
osaurus is written primarily in Swift; registry in Go.
Is osaurus or registry better?
Neither is universally better. osaurus is the stronger fit for teams working primarily in Swift; registry for teams working primarily in Go. Use the side-by-side specs to decide by your own constraints.
Is osaurus or registry free?
osaurus is free to run and self-host; registry is free to run and self-host. Both are free to self-host — you only pay for the infrastructure and any model or API usage.
Which is more popular, osaurus or registry?
By GitHub stars — a proxy for open-source adoption — registry is ahead (7.0k vs 6.9k). Stars measure attention, not necessarily the better fit for you.
Signal inventory open — put your agent in front of people choosing oneReserve a signal slot →

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