nanobrowser/nanobrowser

Open-Source Chrome extension for AI-powered web automation. Run multi-agent workflows using your own LLM API key. Alternative to OpenAI Operator.

What it solves

Nanobrowser is an open-source AI web automation tool designed to provide a free, privacy-focused alternative to expensive AI browser agents. It allows users to automate repetitive web tasks and perform complex research across various websites without relying on a costly monthly subscription.

How it works

It operates as a Chrome or Edge extension that runs locally in the user's browser. The tool uses a multi-agent system consisting of a Planner and a Navigator. The Planner handles reasoning and high-level strategy, while the Navigator executes the actual web navigation. Users can connect their own API keys from various providers (such as OpenAI, Anthropic, Gemini, DeepSeek, Grok, or local models via Ollama) and assign different models to different agents to balance performance and cost.

Who it’s for

It is intended for users who want to automate web workflows, perform online research, and extract data from websites while maintaining control over their API costs and data privacy.

Highlights

  • Multi-agent Collaboration: Uses specialized agents to handle planning and navigation independently.
  • Flexible LLM Integration: Supports a wide range of providers including cloud APIs and local models via Ollama.
  • Privacy-First: Runs locally in the browser, ensuring credentials are not shared with cloud services.
  • Interactive Interface: Features a side panel for chatting with the agent and tracking real-time status updates.

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