Nanobrowser
Open-Source Chrome extension for AI-powered web automation. Run multi-agent workflows using your own
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API key required
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About
](https://github.com/nanobrowser) [ ](https://discord.gg/NN3ABHggMK) [ [](https://github.com/sponsors/alexchenzl)
🌐 Nanobrowser
Nanobrowser is an open-source AI web automation tool that runs in your browser. A free alternative to OpenAI Operator with flexible LLM options and multi-agent system.
⬇️ Get Nanobrowser from Chrome Web Store for free
👏 Join the community in Discord | X
🌟 Loving Nanobrowser? Give us a star and help spread the word!
❤️ Support the project by sponsoring us - every contribution helps keep Nanobrowser free and open source!
Nanobrowser's multi-agent system analyzing HuggingFace in real-time, with the Planner intelligently self-correcting when encountering obstacles and dynamically instructing the Navigator to adjust its approach—all running locally in your browser.
🔥Why Nanobrowser?
Looking for a powerful AI browser agent without the $200/month price tag of OpenAI Operator? Nanobrowser , as a chrome extension, delivers premium web automation capabilities while keeping you in complete control:
- 100% Free - No subscription fees or hidden costs. Just install and use your own API keys, and you only pay what you use with your own API keys.
- Privacy-Focused - Everything runs in your local browser. Your credentials stay with you, never shared with any cloud service.
- Flexible LLM Options - Connect to your preferred LLM providers with the freedom to choose different models for different agents.
- Fully Open Source - Complete transparency in how your browser is automated. No black boxes or hidden processes.
Note: We currently support OpenAI, Anthropic, Gemini, Ollama, Groq, Cerebras, Llama and custom OpenAI-Compatible providers, more providers will be supported.
📊 Key Features
- Multi-agent System: Specialized AI agents collaborate to accomplish complex web workflows
- Interactive Side Panel: Intuitive chat interface with real-time status updates
- Task Automation: Seamlessly automate repetitive web automation tasks across websites
- Follow-up Questions: Ask contextual follow-up questions about completed tasks
- Conversation History: Easily access and manage your AI agent interaction history
- Multiple LLM Support: Connect your preferred LLM providers and assign different models to different agents
🌐 Browser Support
Officially Supported:
- Chrome - Full support with all features
- Edge - Full support with all features
Not Supported:
- Firefox, Safari, and other Chromium variants (Opera, Arc, etc.)
Don't lose this
Three weeks from now, you'll want Nanobrowser again. Will you remember where to find it?
Save it to your library and the next time you need Nanobrowser, it’s one tap away — from any AI app you use. Group it into a bench with the rest of the team for that kind of task and you can pull the whole stack at once.
⚡ Pro tip for geeks: add a-gnt 🤵🏻♂️ as a custom connector in Claude or a custom GPT in ChatGPT — one click and your library is right there in the chat. Or, if you’re in an editor, install the a-gnt MCP server and say “use my [bench name]” in Claude Code, Cursor, VS Code, or Windsurf.
a-gnt's Take
Our honest review
Open-Source Chrome extension for AI-powered web automation. Run multi-agent workflows using your own. Best for anyone looking to make their AI assistant more capable in search & web. It's completely free and works across most major AI apps. This one just landed in the catalog — worth trying while it's fresh.
Tips for getting started
Tap "Get" above, pick your AI app, and follow the steps. Most installs take under 30 seconds.
Heads up: this needs an API key to work. You'll get one from the service's website (usually free). The setup guide tells you exactly where.
What's New
Imported from GitHub
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