Sigma
Organize your internet in separate workspaces.
At a glance
Starts at
Free
Listed as free on the vendor's site.
Free tier
Yes
Platforms
Web, macOS, Windows
Best for
Students, researchers, creators
Not for
Advertisers and privacy enthusiasts
4.0 out of 5
Scored by Alex after real useOur verdict
SigmaOS offers a unique way to organize tabs into workspaces and use vertical tabs. It's ideal for those who need to manage multiple tasks but can be limiting when it comes to privacy settings.
✓What it does well
WorkspacesTabs are organized into neat, separate lists like rooms in a house.
Vertical TabsEasier to get an overview of open pages, similar to a to-do list.
Quick Search (Lazy Search)Start searching instantly with just the spacebar key.
✕Where it falls short
No Ad BlockerDoes not come built-in with an ad-block feature, requiring external tools.
Lack of Privacy SettingsLimited options for custom privacy settings compared to other browsers.
No Built-In ExtensionsDoes not offer built-in extensions like popular browsers do.
Key features
Free DownloadAvailable as a free community download.
Focus ModeHide everything but the webpage with Focus mode.
Magic ThemeColor matching for better visual integration into websites.