# cua vs osaurus
_Agent Infrastructure · independent comparison_

> cua and osaurus are both open-source agent infrastructure you can self-host for free. cua has wider GitHub adoption — 21k stars vs 7.6k. Neither is universally better — pick by fit.

## Side by side

**cua**
- Open source · Infrastructure · 21k★ · Python · MIT · active 2 days ago
- Best for: Background computer-use across macOS, Windows, and Linux without stealing focus.
- Avoid if: You need a runtime older than Python 3.11.
- [listing](https://agentsearchengine.app/agents/cua) · [official](https://cua.ai)

**osaurus**
- Open source · Infrastructure · 7.6k★ · Swift · MIT · active 2 days ago
- [listing](https://agentsearchengine.app/agents/osaurus) · [official](https://osaurus.ai)

## Key differences

- cua has wider GitHub adoption — 21k stars vs 7.6k.
- cua is written primarily in Python; osaurus in Swift.

## Which to choose

**Choose cua if:** Background computer-use across macOS, Windows, and Linux without stealing focus.

**Choose osaurus if:** your team works primarily in Swift.

## FAQ

**What's the main difference between cua and osaurus?**
cua has wider GitHub adoption — 21k stars vs 7.6k.

**Is cua or osaurus better?**
Neither is universally better. cua is the stronger fit for Background computer-use across macOS, Windows, and Linux without stealing focus; osaurus for teams working primarily in Swift. Use the side-by-side specs to decide by your own constraints.

**Is cua or osaurus free?**
cua is free to run and self-host; osaurus 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, cua or osaurus?**
By GitHub stars — a proxy for open-source adoption — cua is ahead (21k vs 7.6k). Stars measure attention, not necessarily the better fit for you.

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Source: [Agent Search Engine](https://agentsearchengine.app) — https://agentsearchengine.app/compare/cua-vs-osaurus