I built WebBrain (webbrain.one) — a free, open-source browser extension that brings AI agent capabilities to Chrome and Firefox.
What it does:
📖 Page Understanding — Reads and comprehends any web page. Ask questions and get instant answers from the current page content.
🤖 Full Browser Agent — Click, type, scroll, navigate, and interact with pages on your behalf. Automate repetitive tasks with natural language instructions.
📊 Data Extraction — Extract structured data from any page — tables, lists, links, forms.
🔌 Multi-Provider LLM — Works with llama.cpp, Ollama, OpenAI, Claude, OpenRouter, StudioLM, vLLM. Use your preferred model — or run completely offline.
🛡️ Privacy First — Run with a local LLM for zero data leakage. No telemetry, no tracking, no accounts required.
Why WebBrain?
Unlike Claude in Chrome (proprietary, $20/mo, cloud-only), WebBrain is:
- Free forever and open-source (MIT)
- Self-hostable — bring your own API keys or run locally
- Works on Chrome AND Firefox (Claude only works on Chrome)
- Fully offline capable with local models
Watch this comparison with Claude in Chrome: https://www.youtube.com/watch?v=iPTjqDP5ApY
Available on Chrome Web Store and Firefox Add-ons. Source on GitHub.
Would love feedback from the self-hosted AI community!
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