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Tabbit vs Vessel Browser: catalog facts
Tabbit	Vessel Browser
Freemium Free to download and try; paid plan details are not given on the homepage.	Freemium Open source; Vessel Premium costs $5.99 per month with a 7-day trial.
Windows, macOS	Windows, macOS, Linux
Agent mode for multi-step tasks in the browser Many AI models from different providers	AI actions shown in a real browser window with approval steps MCP control for external agent tools
Relies on cloud AI models No Linux version	Early software, not recommended for sensitive accounts Linux is the only mature install target
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Needs internet
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.