Compare software

Fellou vs Sigma AI Browser: catalog facts
Fellou	Sigma AI Browser
Freemium Free to download, with paid plans for heavier agent use.	Free Described by the developer as a free browser.
Windows, macOS	Windows, macOS, Android, iOS
Agent can run multi-step tasks across several websites Shows an editable action plan before it acts	Built-in AI agent that acts on web pages Local Eclipse LLM keeps prompts on the device
Browser itself is closed source Agent actions depend on AI services and an internet connection	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 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.