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BrowserOS vs Dia: catalog facts
BrowserOS	Dia
Free Free and open source.	Freemium A free tier is available. Heavier use requires a paid plan.
Windows, macOS, Linux	macOS
Built-in AI agents that act on web pages Can use local models instead of a cloud service	Assistant reads your open tabs, so questions do not need copy and paste
Agent features are new and still changing quickly Local models need capable hardware to run well	macOS only and requires an account The assistant sends page content to a remote service, which has privacy implications
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 22, 2026

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