BrowserOS is an open-source Chromium fork that runs AI agents natively. The privacy-first alternative to ChatGPT Atlas, Perplexity Comet, and Dia.

Use your own API keys or run local models with Ollama. Your data never leaves your machine.

Documentation · Discord · Slack · Twitter · Feature Requests

Quick Start

1. Download and install BrowserOS — macOS · Windows · Linux (AppImage) · Linux (Debian)
2. Import your Chrome data (optional) — bookmarks, passwords, extensions all carry over
3. Connect your AI provider — Claude, OpenAI, Gemini, ChatGPT Pro via OAuth, or local models via Ollama/LM Studio

Features

Feature	Description	Docs
AI Agent	53+ browser automation tools — navigate, click, type, extract data, all with natural language	Guide
MCP Server	Control the browser from Claude Code, Gemini CLI, or any MCP client	Setup
Workflows	Build repeatable browser automations with a visual graph builder	Docs
Cowork	Combine browser automation with local file operations — research the web, save reports to your folder	Docs
Scheduled Tasks	Run agents on autopilot — daily, hourly, or every few minutes	Docs
Memory	Persistent memory across conversations — your assistant remembers context over time	Docs
SOUL.md	Define your AI's personality and instructions in a single markdown file	Docs
LLM Hub	Compare Claude, ChatGPT, and Gemini responses side-by-side on any page	Docs
40+ App Integrations	Gmail, Slack, GitHub, Linear, Notion, Figma, Salesforce, and more via MCP	Docs
Vertical Tabs	Side-panel tab management — stay organized even with 100+ tabs open	Docs
Ad Blocking	uBlock Origin + Manifest V2 support — 10x more protection than Chrome	Docs
Cloud Sync	Sync browser config and agent history across devices	Docs
Skills	Custom instruction sets that shape how your AI assistant behaves	Docs
Smart Nudges	Contextual suggestions to connect apps and use features at the right moment	Docs

Demos

BrowserOS agent in action

Install BrowserOS as MCP and control it from claude-code

HackerNews.top.3.mp4

Use BrowserOS to chat

use-browserOS-to-chat.mp4

Use BrowserOS to scrape data

use-browserOS-to-extract.mp4

Install browseros-cli

Use browseros-cli to launch and control BrowserOS from the terminal or from AI coding agents like Claude Code.

macOS / Linux:

curl -fsSL https://cdn.browseros.com/cli/install.sh | bash

Windows:

irm https://cdn.browseros.com/cli/install.ps1 | iex

After install, run browseros-cli init to connect the CLI to your running BrowserOS instance.

LLM Providers

BrowserOS works with any LLM. Bring your own keys, use OAuth, or run models locally.

Provider	Type	Auth
Kimi K2.5	Cloud (default)	Built-in
ChatGPT Pro/Plus	Cloud	OAuth
GitHub Copilot	Cloud	OAuth
Qwen Code	Cloud	OAuth
Claude (Anthropic)	Cloud	API key
GPT-4o / o3 (OpenAI)	Cloud	API key
Gemini (Google)	Cloud	API key
Azure OpenAI	Cloud	API key
AWS Bedrock	Cloud	IAM credentials
OpenRouter	Cloud	API key
Ollama	Local	Setup
LM Studio	Local	Setup

How We Compare

	BrowserOS	Chrome	Brave	Dia	Comet	Atlas
Open Source	✅	❌	✅	❌	❌	❌
AI Agent	✅	❌	❌	❌	✅	✅
MCP Server	✅	❌	❌	❌	❌	❌
Visual Workflows	✅	❌	❌	❌	❌	❌
Cowork (files + browser)	✅	❌	❌	❌	❌	❌
Scheduled Tasks	✅	❌	❌	❌	❌	❌
Bring Your Own Keys	✅	❌	✅	❌	❌	❌
Local Models (Ollama)	✅	❌	✅	❌	❌	❌
Local-first Privacy	✅	❌	✅	❌	❌	❌
Ad Blocking (MV2)	✅	❌	✅	❌	✅	❌

Detailed comparisons:

• BrowserOS vs Chrome DevTools MCP — developer-focused comparison for browser automation
• BrowserOS vs Claude Cowork — getting real work done with AI
• BrowserOS vs OpenClaw — everyday AI assistance

Architecture

BrowserOS is a monorepo with two main subsystems: the browser (Chromium fork) and the agent platform (TypeScript/Go).

BrowserOS/
├── packages/browseros/              # Chromium fork + build system (Python)
│   ├── chromium_patches/            # Patches applied to Chromium source
│   ├── build/                       # Build CLI and modules
│   └── resources/                   # Icons, entitlements, signing
│
├── packages/browseros-agent/        # Agent platform (TypeScript/Go)
│   ├── apps/
│   │   ├── server/                  # MCP server + AI agent loop (Bun)
│   │   ├── agent/                   # Browser extension UI (WXT + React)
│   │   ├── cli/                     # CLI tool (Go)
│   │   ├── eval/                    # Benchmark framework
│   │   └── controller-ext/          # Chrome API bridge extension
│   │
│   └── packages/
│       ├── agent-sdk/               # Node.js SDK (npm: @browseros-ai/agent-sdk)
│       ├── cdp-protocol/            # CDP type bindings
│       └── shared/                  # Shared constants

Package	What it does
packages/browseros	Chromium fork — patches, build system, signing
apps/server	Bun server exposing 53+ MCP tools and running the AI agent loop
apps/agent	Browser extension — new tab, side panel chat, onboarding, settings
apps/cli	Go CLI — control BrowserOS from the terminal or AI coding agents
apps/eval	Benchmark framework — WebVoyager, Mind2Web evaluation
agent-sdk	Node.js SDK for browser automation with natural language
cdp-protocol	Type-safe Chrome DevTools Protocol bindings

Contributing

We'd love your help making BrowserOS better! See our Contributing Guide for details.

• Report bugs
• Suggest features
• Join Discord · Join Slack
• Follow on Twitter

Agent development (TypeScript/Go) — see the agent monorepo README for setup instructions.

Browser development (C++/Python) — requires ~100GB disk space. See packages/browseros for build instructions.

Credits

• ungoogled-chromium — BrowserOS uses some patches for enhanced privacy. Thanks to everyone behind this project!
• The Chromium Project — at the core of BrowserOS, making it possible to exist in the first place.

License

BrowserOS is open source under the AGPL-3.0 license.

Copyright © 2025 Felafax, Inc.

Stargazers

Thank you to all our supporters!

Built with ❤️ from San Francisco