Compare software

Opera AirSigmaOS
Free

Free to use.

 Freemium

A free tier is available. Heavier use moves to a paid subscription.

Windows, macOS macOS
  • Ads and notifications hidden by default
  • Built-in break and focus prompts
  • Tabs live in named workspaces with separate logins, and each one can be marked done or locked, which…
  • Proprietary
  • Focus features may feel unnecessary to users who want a plain browser
  • It is closed source, macOS-only, and the free tier is limited enough that regular use pushes you to…
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
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked September 22, 2026

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