The Sigma AI browser for Mac that gets things done and keeps your data private.
AI
Ask AI right where you browse.
AI Chat answers and writes in any tab, Chat With Page talks to any site, and Deep Research digs through sources for you.
Privacy
Your browsing stays on your Mac.
Sigma is a private browser with separate profiles and a built-in ad blocker that stops trackers before they load.
Agent & Local AI
An agent that does the clicking for you.
The AI Agent fills forms, compares and books for you, or runs on local models like Gemma, fully on-device.
Performance
The fastest browser for Mac. Proven.
Top Speedometer 3.0 score and the lowest RAM use of any major browser, with every feature free.
AI chat
AI in every tab
Open the side panel and talk to the page you're on: Chat With Page reads the article, answers questions, and pulls out the key points in seconds. Any site, any tab, free.
Learn more about Chat with PagePrivacy
Private by default
One toggle opens a fully private session: DuckDuckGo search, a separate profile, and a built-in ad blocker that stops trackers before they load. Nothing follows you from your main browsing, and nothing leaves your Mac.
Learn more about Private BrowserAI agent
Your work, handled
Sigma AI agent can take actions on your behalf: navigating pages, filling forms, managing tasks, and getting things done end-to-end. You describe the goal, and the agent handles the steps
Learn more about AI agentSigma vs. Safari
1.30x
faster
Sigma vs. Brave
1.17x
faster
Sigma vs. Chrome
1.13x
faster
Sigma vs. Perplexity Comet
1.10x
faster
Performance was evaluated using the Speedometer 3.0 benchmark. The test was executed 10 times in each browser, and the final score represents the average result. All tests were conducted on a MacBook Pro M4
In tests with 10 identical tabs open, Sigma used the least amount of RAM compared to other popular browsers, keeping your system faster and more responsive
Sigma
0.8 Gb
Brave
0.92 Gb
Perplexity Comet
0.95 Gb
Chrome
1.00 Gb
Safari
1.2 Gb
Compare Sigma with other popular browsers
Sigma
Comet
Chrome
Safari
Brave
Private
Built-in AI agent
Web3 integration
Prompt injection defense
Chat with site
AI search
How to Install Sigma Browser on a Mac
1
Download for macOS
Get the free web browser for Mac, no account needed.
2
Install in seconds
Open the file and drag Sigma to Applications, like any Mac app.
3
Make it your default
Set Sigma as your Mac's default browser in System Settings, or right in Sigma's settings under Default browser.
Questions & Answers
If you have any questions,
reach out to us on X at @Sigma_Browser
reach out to us on X at @Sigma_Browser
What is the best browser for Mac?
What is the fastest browser for Mac?
What is the best browser for Mac other than Safari?
What is the most secure browser for Mac?
How do I change my default browser on a Mac?
How do I open private browsing on a Mac?
Is Sigma Browser free on Mac?
Does Sigma run on Apple Silicon Macs?
×
Get Sigma on Android
We’ll let you know when Sigma for Android launches.
