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SigmaOS

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Organize tabs like tasks, multitask with split-screen, and get AI answers

Free, no paid tier

Positions SigmaOS holds among the tools of each category it belongs to (Toolradar data, Oct 2026):

Free Browser DevTools Productivity AI Assistants AI Research
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Tracked since 2026

The Bottom Line

Price
Free, no paid tier. Compare plans

Key facts

  • Organizes tabs into workspaces and treats them like tasks.
  • Integrates AI companion, Airis, for contextual assistance and research.
  • Offers features like ad-blocking, focus mode, and split screen for productivity.

Pros

  • Significantly improves tab management and organization with workspaces and vertical tabs.
  • AI companion, Airis, provides intelligent assistance directly within the browsing experience.
  • Enhances focus and reduces distractions with features like ad-blocking, focus mode, and simplification.
  • Supports multiple logins and separate profiles for efficient context switching.

Cons

  • Requires users to adapt to a new browsing paradigm, which may have a learning curve.
  • Compatibility with all browser extensions is not explicitly mentioned.

What is SigmaOS?

SigmaOS is a fresh take on the web browser, designed to enhance productivity and reduce digital clutter. It introduces a unique workspace-based organization system, treating tabs like tasks that can be marked as done or locked. The browser features vertical tabs for better overview, split-screen multitasking, and an integrated ad blocker for a cleaner browsing experience. Beyond organization, SigmaOS incorporates advanced AI capabilities through its companion, Airis. Airis can understand the context of the website you're on to answer questions, explain paragraphs, and even conduct internet searches to provide a starting point for research. It also offers a 'Simplify' feature to distill web pages into interactive summaries, aiming to create a more peaceful and focused internet environment. SigmaOS is ideal for users seeking a more structured, efficient, and intelligent way to interact with the web.
Data compiled by Toolradar Pricing checked · How we evaluate
Source sigmaos.com

Preview

Key Features

  • Workspaces for tab organization
  • Vertical tabs
  • Tabs as tasks (mark as done or lock)
  • Split screen multitasking
  • Lazy Search (universal search bar)
  • Airis AI companion (contextual chat, explanations, search)
  • Simplify (interactive website summaries)
  • Magic Theme (browser colors match website)

Pricing

Free

SigmaOS is completely free to use with no hidden costs.

View pricing

Is SigmaOS worth the price?

Great value

SigmaOS currently offers only a Free tier, which is inherently fair and generous as there are no monetary costs involved.

This makes it an excellent option for anyone looking to try out an alternative browsing experience without any financial commitment. It's best for individuals who want to explore its features before any paid options are introduced.

Full SigmaOS pricing: every plan, hidden costs and alternatives

SigmaOS by the numbers

Toolradar data: It is listed as an alternative to 5 other tools on Toolradar, ranking #3 of 33 in Browser DevTools. As of Oct 2026.

SigmaOS compared with 33 Browser DevTools tools on Toolradar, as of Oct 2026
Metric SigmaOS Peer median Position (1 is best)
Free plan Yes 33 of 33 have one n/a
Listed as an alternative to 5 tools 1 #3 of 33
Compare-page visits, last 30 days 39 visits 38 #4 of 9 tools with 20+ compare-page visits

Each position is counted among the tools that have data for that row, as noted under it. All Browser DevTools data · How we compute this. Advertising and placement fees are not inputs to any position. Visit counts include visits from every source.

Cite this: Toolradar, “SigmaOS by the numbers”, Oct 2026.

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Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

All SigmaOS alternatives 6+ tools ranked, pricing + verdict per pick SigmaOS vs Brave Head-to-head: features, pricing, who wins SigmaOS vs Opera Head-to-head: features, pricing, who wins SigmaOS vs Web Vitals Head-to-head: features, pricing, who wins

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SigmaOS FAQ

How does SigmaOS help manage numerous open tabs?

SigmaOS organizes tabs like tasks within workspaces, allowing users to mark them as done or lock them. It also features vertical tabs, which provide a better overview of open pages and help reduce digital clutter.

Which teams would benefit most from using SigmaOS?

SigmaOS is ideal for users and teams seeking a more structured, efficient, and intelligent way to interact with the web. Its productivity features, such as workspace-based organization and split-screen multitasking, support enhanced focus for various tasks.

How does SigmaOS compare to Brave in terms of browsing experience?

SigmaOS offers a unique workspace-based organization system and an AI companion named Airis for intelligent assistance, whereas Brave is known for its privacy-focused browsing and built-in ad blocker. Both browsers aim to provide a cleaner browsing experience, with SigmaOS focusing more on productivity and task management.

Does SigmaOS include a free tier?

Yes, SigmaOS is free to use and does not require a paid plan. This allows users to access its full range of features, including tab management, AI assistance, and distraction reduction tools, without cost.

What kind of AI capabilities does the Airis companion provide?

Airis, the AI companion in SigmaOS, can understand the context of a website to answer questions, explain paragraphs, and conduct internet searches. It also offers a 'Simplify' feature to distill web pages into interactive summaries, aiming for a more focused internet environment.

Can SigmaOS support multiple user accounts or profiles?

Yes, SigmaOS supports multiple logins and separate profiles. This feature allows users to efficiently switch between different contexts, which is beneficial for managing various work or personal accounts.

Source: sigmaos.com

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