What is Sigma Browser?
Sigma Browser is an AI browser built on the Chromium engine that combines private browsing, an autonomous AI agent, and a local offline LLM in one application. It runs on Windows, macOS, iOS, and Android. Users who need web-native task automation with built-in privacy can use it as their primary AI browser.
Sigma Browser Video
Features & Benefits
- AI Agent: Executes multi-step tasks inside live websites on the user’s behalf: clicking buttons, filling forms, submitting data, and retrieving results from a single goal description. Includes prompt injection defenses to prevent malicious page content from hijacking task execution.
- Deep Research: Queries multiple web sources simultaneously, cross-checks results, and synthesizes them into one structured report covering market analysis, competitive research, due diligence, and product research.
- Eclipse (Local LLM): Runs an on-device large language model with no cloud connection required. All processing stays on the machine and works fully offline.
- AI Chat: Accepts questions, text generation tasks, and image and file analysis like a regular AI chatbot.
- Chat with Page: Applies the AI chat interface to any open website, returning contextual answers and summaries without leaving the tab.
- Image Generation: Produces visuals directly inside the browser without a third-party tool.
- Quick Translate: Delivers instant translation of any highlighted text into any language.
- Private Profiles: Partitions browsing sessions by context (work, personal, or account-specific) with each profile encrypted and accessed via a 12-word recovery phrase.
- Mnemonic Profile: Builds browser identity on blockchain cryptography, using a recovery phrase for portability and backup.
- Browser Extensions: Installs and runs extensions from other Chromium-based browsers without modification.
- Built-In Ad Blocker: Filters intrusive ads across all sessions.
- Web3 Integration: Supports decentralized applications and crypto wallet management natively within the browser.
- Security & Privacy: All connections use TLS 1.3, HTTPS, and DNS-over-HTTPS by default. AI chat is end-to-end encrypted. The codebase is open-source. Sigma complies with CCPA and GDPR.
Real-World Applications
Researching competitors, market positioning, or emerging trends normally requires opening many tabs and stitching information together manually. Sigma’s Deep Research mode may reduce that effort by querying multiple sources in parallel and returning a structured summary. Someone analyzing a new market segment could receive a report covering demand dynamics, competitor strengths, and barriers to entry. The output is formatted as a structured report rather than a raw list of links.
The AI agent can handle repetitive online tasks that follow predictable patterns. Someone managing flight bookings, submitting recurring forms, or working through a multi-step checkout can describe the goal once and let the agent complete each step. Budget planning and inbox management are additional documented use cases. Because the agent navigates live websites rather than relying on APIs, it can interact with services that have no developer integration.
Eclipse addresses a specific concern about cloud AI: sending sensitive prompts to an external server. Because it runs entirely on-device, anyone working with confidential documents or on a restricted network can use local AI without any data leaving the machine. It functions without an internet connection, making it usable in offline environments where cloud-based tools are unavailable.
Private Profiles allow separate contexts to coexist within one AI browser. Each profile uses independent encryption tied to a 12-word recovery phrase, keeping credentials and session data isolated. The Web3 layer extends the browser to decentralized applications and crypto wallet interactions without a separate extension.
