Sigma is a privacy-focused web browser designed for users who want to integrate artificial intelligence into their daily surfing habits without compromising their personal data. The application stands out by featuring a built-in AI agent and executing AI processes locally on the user's device, which ensures that browsing history and queries remain completely confidential. Beyond its artificial intelligence capabilities, the browser includes integrated ad-blocking technology to streamline page loading times and eliminate intrusive trackers. This combination of local processing and privacy-first design makes it an appealing choice for security-conscious individuals, researchers, and general users seeking a more secure and efficient way to navigate the internet. By keeping data on-device, Sigma addresses the growing concern over how modern AI systems handle user inputs and web interactions, providing a secure alternative to mainstream browsers that rely heavily on cloud-based tracking and external servers.
Problem: Researching sensitive topics or proprietary business data using cloud-based AI models risks data leaks and privacy violations.
Solution: Sigma runs a local LLM called Eclipse directly on the user's device, processing prompts and generating summaries completely offline.
Example: A financial analyst analyzes proprietary company reports using the "Chat With Page" feature without uploading any data to external servers.
Problem: Manually filling out forms, booking travel across multiple sites, and executing repetitive web tasks is time-consuming.
Solution: The integrated Sigma AI agent can navigate web pages, fill out forms, and complete multi-step tasks based on plain-text user instructions.
Example: A user asks the AI agent to find and book the cheapest non-stop flight to Dubai for a specific date, and the agent navigates the booking platforms automatically.
Problem: Managing multiple client accounts, personal logins, and professional profiles in a single browser leads to session conflicts and security risks.
Solution: Sigma provides Private Profiles secured by a 12-word recovery phrase, keeping data encrypted and separated.
Example: A freelancer switches between a "Work" profile with client-specific extensions and a secure "Personal" profile containing their Web3 wallets.
Target audience: Best for: Privacy-conscious researchers, Web3 developers, power users seeking automated browser tasks, and professionals handling sensitive data.
Pricing: Open Source · Categories: Assistant, Productivity, Search engine
Tags: AI, ai agent, assistant, search engine
Sigma is an open-source, privacy-oriented web browser built on Chromium that integrates local artificial intelligence directly into the browsing experience. It enables users to process prompts, summarize pages, and translate text completely offline on their own hardware. It also includes native ad blocking, automated agent navigation, and Web3 connectivity tools.
Sigma executes its large language model, called Eclipse, locally on the user's computer rather than sending inputs to external cloud servers. Because queries, browsing histories, and page summaries are processed on-device, sensitive personal and enterprise data remains confidential. The browser also features built-in ad and tracker blocking to stop third parties from monitoring browsing activity.
The built-in AI agent can automate multi-step web tasks based on plain-language instructions from the user. It navigates across websites, executes searches, and fills out online forms automatically, such as booking travel arrangements. Users can also use in-page chat capabilities to analyze documents, extract data, and translate web content without leaving the active tab.
Sigma provides decoupled private profiles designed to isolate different browsing contexts, such as client projects, personal sessions, and decentralized applications. Each profile is secured using a twelve-word mnemonic recovery phrase, keeping data and extension states encrypted. This setup prevents session conflicts and allows power users and developers to maintain strictly separated browser environments on a single device.
Yes, Sigma is distributed under an open-source pricing model. Users can download and inspect the browser without paying subscription fees or licensing costs. It provides full access to its built-in local language model, automated navigation agent, ad-blocking tools, and Web3 wallet connectivity without charging for core browsing or offline artificial intelligence processing features.