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SigmaOS vs Web: catalog facts
SigmaOS	Web
Freemium A free tier is available. Heavier use moves to a paid subscription.	Free Free to download and build from the published source.
macOS	macOS
Tabs live in named workspaces with separate logins, and each one can be marked done or locked, which…	Native macOS interface Local AI page questions through MLX on the Mac
It is closed source, macOS-only, and the free tier is limited enough that regular use pushes you to…	Requires Apple Silicon and macOS 26.5 or later Development preview with limited site compatibility testing
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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