Sigma
Organize your internet in separate workspaces.
At a glance
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
✕Where it falls short
Key features
Questions about Sigma
What is Sigma?
Sigma, from SigmaOS, is a browser that organizes the internet into separate workspaces, keeping tabs in neat lists like rooms in a house. It uses vertical tabs for an overview of open pages, a spacebar quick search, a Focus mode that hides everything but the webpage, and a Magic Theme that matches colors to websites.
Is Sigma free?
Sigma is listed as free on the vendor's site and is available as a free community download. Toolio shows a free plan at $0 with no paid plan listed. It runs on the web, macOS and Windows.
Does Sigma have an ad blocker?
No. The reviewer notes that Sigma does not come with a built-in ad blocker, so blocking ads requires external tools. It also offers no built-in extensions like popular browsers do, and its privacy settings are limited compared to other browsers.
Who is Sigma best for?
The reviewer recommends Sigma for students, researchers and creators who need to manage multiple tasks. It is not for advertisers and privacy enthusiasts, since the verdict says it can be limiting when it comes to privacy settings.
What are some alternatives to Sigma?
Toolio lists Todo.is, TidyingAI Chrome Extension, Supertasks and DeepFabric Chrome Extension. TidyingAI groups open tabs and bookmarks automatically and names each group with AI, while DeepFabric puts task management, meeting notes and an AI co-pilot team into the browser's new tab. Alex scored Sigma 4.0 out of 5.