SigmaOS

SigmaOS is a macOS browser with workspaces, vertical tabs, split screen, keyboard shortcuts, and Airis for contextual questions, summaries, and web search.

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Overview

SigmaOS is a browser built around workspaces, vertical tabs, split-screen browsing, and keyboard-driven navigation. The homepage presents it as a different way to organize and move through the internet, rather than a conventional tab strip browser.

Its core workflow is to keep browsing organized by context: tabs can live in separate workspaces, be marked done when finished, locked when they should stay, and searched quickly with Lazy Search. The browser also includes Airis, a companion that can answer questions in context, simplify pages into summaries, and search the web to help you get started on research or follow-up questions.

Features

Workspaces

Organize pages into separate workspaces, with tabs laid out as lists so related browsing stays grouped together.

Vertical tabs

Use vertical tabs to get a clearer overview of open pages and move between them like a task list.

Tabs as tasks

Mark tabs as done or lock them to keep important pages around instead of leaving them open indefinitely.

Split screen

Split two sites side by side when you need to compare information or work across pages at once.

Lazy Search

Press the spacebar to search tabs, the web, commands, and bookmarks from one entry point.

Airis assistance

Let Airis help with contextual questions, web search, website summaries, and follow-up questions from within the browser.

Use Cases

Topic-based research
Keep research tabs grouped by topic so you can switch between projects without losing context or flattening everything into one long tab bar.
Side-by-side comparison
Compare two websites or documents side by side when you need to read, verify, or copy information between them.
Separate account management
Manage work and personal accounts in different profiles or workspaces so logins stay separated.
Contextual browsing help
Use Airis to ask questions about the page you are on, simplify dense content, or search the web for a starting point on a new topic.
Focused reading
Reduce distraction by focusing on one page at a time and hiding the rest of the browser chrome when you want a cleaner reading view.

Pros and Cons

Pros

Workspaces, vertical tabs, and tab status controls make page organization more structured than a standard browser.
Lazy Search provides a single shortcut for tabs, bookmarks, commands, and web search.
Airis adds contextual help for reading, summarizing, and exploring websites.
The browser supports easy migration by importing logins, cookies, and history from a previous browser.
Focus mode, ad blocking, and split screen cover several common browsing workflows in one app.

Cons

The public pricing URL in the collected sources is not working, so plan details are unclear.
The collected source explicitly says SigmaOS is currently on macOS only.

FAQ

What platforms does SigmaOS support?

SigmaOS is currently available on macOS only, and the download page offers an email link for mobile visitors who want access to the desktop app.

Is there public pricing information?

The source does not show a working pricing page. The pricing URL currently returns a page-not-found message, so pricing and plan details are not confirmed here.

What is SigmaOS for?

The download page says SigmaOS is designed around one window, many workspaces, and all your tabs, while the homepage highlights workflows such as workspaces, vertical tabs, split screen, focus mode, and browser search tools.

Can I switch from another browser without starting over?

The homepage says SigmaOS can bring over logins, cookies, and history from a previous browser, which suggests migration from another browser is built into the onboarding flow.

Does SigmaOS have team collaboration features?

The source mentions a Slack community and a community form, but it does not provide detailed team or admin features in the collected text.