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Fellou vs Jatter: catalog facts
Fellou	Jatter
Freemium Free to download, with paid plans for heavier agent use.	Freemium Free to get started; the site has a pricing page for further plans.
Windows, macOS	Windows, macOS, Android, iOS
Agent can run multi-step tasks across several websites Shows an editable action plan before it acts	AI answers based on your own logged-in accounts Client-side encryption of personal data
Browser itself is closed source Agent actions depend on AI services and an internet connection	Works by reading sensitive pages such as banking and medical sites Few technical details published about how the AI processes data
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 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.