Compare software

Nanobrowser vs Magentic-UI: catalog facts
Nanobrowser	Magentic-UI
Free Free and open source; you pay your chosen LLM provider for API usage.	Free Free and open source; model usage may cost money depending on the provider you configure.
Browser extension	Self-hosted
Runs inside your own browser Bring your own LLM API key	Agent works across both the browser and local files Designed to run with smaller models
Needs a paid API key from a model provider Chrome-focused	Experimental research project Requires setting up Python and a model configuration
Browser extension	Self-hosted
Open source	Open source
License not stated	License: MIT
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.