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Fellou vs Vessel Browser: catalog facts
Fellou	Vessel Browser
Freemium Free to download, with paid plans for heavier agent use.	Freemium Open source; Vessel Premium costs $5.99 per month with a 7-day trial.
Windows, macOS	Windows, macOS, Linux
Agent can run multi-step tasks across several websites Shows an editable action plan before it acts	AI actions shown in a real browser window with approval steps MCP control for external agent tools
Browser itself is closed source Agent actions depend on AI services and an internet connection	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 September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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