Sigma AI Browser

Sigma Browser is a privacy-first AI browser that combines web browsing, AI agents, local AI, deep research, and automation in one workspace. Its built-in AI Agent can interact with websites like a user: navigating pages, clicking buttons, filling out forms, gathering information, and completing multi-step browser tasks. Instead of manually working through repetitive online workflows, users can describe a goal and let the agent handle the individual steps. Sigma also includes Deep Research for collecting and comparing information across multiple sources, AI Chat for writing, brainstorming, and analysis, and page-aware AI tools for summarizing, translating, and understanding web content without constantly switching between tabs or separate AI apps. One of Sigma’s key differences is Local AI. Users can download and run AI models directly inside the browser, allowing prompts, pages, and files to be processed on-device rather than sent to external servers. Local models can also work offline, making Sigma useful for privacy-sensitive research, writing, document analysis, and AI-assisted workflows. Key features include: * Built-in AI Agent for web automation and multi-step tasks * Local AI models with on-device processing * Offline AI chat, writing, and summarization * Deep Research for multi-source research and analysis * AI Chat built directly into the browser * Page summaries, translation, and content analysis * Private document and file analysis * Built-in ad blocker * End-to-end encrypted sync * Phishing protection and prompt injection defense * Open-source browser code * Chromium extension support Sigma Browser is designed for founders, developers, researchers, professionals, creators, and AI power users who want to browse, research, create, and automate from a single AI-powered workspace. Unlike traditional browsers that rely on separate AI extensions or cloud-only assistants, Sigma integrates AI directly into the browser and gives users the option to run their workflows locally for greater privacy and control.