Sigma
Sigma is a macOS web browser focused on private browsing, AI-assisted research, and everyday web tasks in a desktop app.
What is Sigma?
Sigma is a native web browser for macOS that helps people browse the web, research information, and use built-in AI tools from one app. It is designed for users who want an alternative to mainstream browsers with a stronger focus on integrated AI features and privacy-oriented browsing workflows. Common uses include everyday web browsing, reading and summarizing online content, running web-based work in separate sessions, and using AI assistance while navigating sites. Sigma also offers private browsing features and promotes local AI options for users who want more control over how AI tasks are handled. On a Mac, users will typically interact with it as their main browser or as a secondary browser for research-heavy or privacy-focused work. Sigma is published by SigmaBrowser OU.
Key features
- Browse websites in a dedicated macOS browser
- Use built-in AI tools while reading and researching online
- Open private browsing sessions for more isolated web activity
- Summarize and work with web content inside the browser
- Use separate browsing contexts for different tasks or workflows
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Safety overview
Status: Mostly safe
Sigma is a legitimate web browser, so network access, website data storage, downloads, cookies, and saved sign-ins are normal for its purpose. If you use its AI features, some browsing content or prompts may be processed through browser-provided AI tools, so avoid sharing sensitive information unless you are comfortable with that workflow. As with any browser, keep it updated, review saved permissions for camera, microphone, notifications, and downloads, and only install extensions you trust if extension support is enabled.
Recommendation: Keep Sigma if you use it for browsing, research, or AI-assisted web work on your Mac. If you no longer use it, you can remove it like other browsers, but doing so may delete its saved sessions, site data, downloads history, and preferences unless you export or back them up first.
Common paths
/Applications/Sigma.app
Cache paths
~/Library/Caches/com.sigmabrowser.sigmabrowser
Support paths
~/Library/Application Support/com.sigmabrowser.sigmabrowser
Preference paths
~/Library/Preferences/com.sigmabrowser.sigmabrowser.plist
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