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Tabbit vs Sigma AI Browser: catalog facts
Tabbit	Sigma AI Browser
Freemium Free to download and try; paid plan details are not given on the homepage.	Free Described by the developer as a free browser.
Windows, macOS	Windows, macOS, Android, iOS
Agent mode for multi-step tasks in the browser Many AI models from different providers	Built-in AI agent that acts on web pages Local Eclipse LLM keeps prompts on the device
Relies on cloud AI models No Linux version	Cloud AI features send data off the device Developer and licensing details are not clearly stated
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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