Sigma Browser

What is Sigma Browser?

Sigma Browser is a free private AI browser that redefines web browsing by integrating a powerful AI agent, local AI capabilities, and robust privacy features. Built on the reliable Chromium engine, Sigma offers a fast, secure, and intelligent browsing experience without tracking or data collection.

At its core, Sigma features an AI agent that can take actions on your behalf—navigating pages, filling forms, managing tasks, and completing end-to-end workflows. You simply describe your goal, and the agent handles the steps. Additionally, Sigma AI Chat allows you to ask questions, conduct deep research, generate images, and create text all in one place. For privacy-conscious users, Sigma runs Eclipse, a local LLM built directly into the browser. Your data stays on your device with no cloud processing, ensuring faster responses and full control over your information. You can ask questions, summarize pages, write, think, and explore—all locally.

Beyond AI, Sigma includes an ad blocker for a cleaner browsing experience and blockchain-based user identity for enhanced security. You can turn any website into a conversation, asking questions and getting instant summaries without leaving the page. Translation is seamless—highlight any sentence and translate it into any language. Sigma supports all your favorite Chrome extensions, and its Spaces feature lets you separate work, personal browsing, and accounts into encrypted environments secured by a 12-word phrase.

Technical details: Sigma uses TLS 1.3, HTTPS, and DNS-over-HTTPS for advanced privacy protection. It scored high on Speedometer 3.0 benchmarks, demonstrating excellent performance. Bookmarks, password managers, history, and extensions are redesigned for simplicity and intuitiveness. Sigma also supports decentralized apps, wallet management, and blockchain network interaction directly in the browser.

Use cases include privacy-focused browsing, AI-powered research, task automation, and secure multi-account management. Whether you're a professional needing efficient workflows or a user valuing privacy, Sigma Browser delivers a comprehensive solution.

Use Cases

Key Features

Who is it for?

privacy, conscious users, researchers, students, content creators, professionals, everyday web users

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