WebBrain is a free, open-source browser extension that brings AI agent capabilities to Chrome and Firefox. Read pages, extract data, and automate web tasks — powered by your choice of LLM. The self-hostable alternative to proprietary browser AI plugins. Key Features: - Page Understanding: Reads and comprehends any web page — articles, docs, dashboards, forms - Full Browser Agent: Click, type, scroll, navigate, and interact with pages on your behalf - Data Extraction: Extract structured data from any page — tables, lists, links, forms - Multi-Provider LLM: Works with local llama.cpp, OpenAI, Anthropic Claude, and OpenRouter - Privacy First: Your data stays yours. Run with a local LLM for zero data leakage - Smart Context: Automatic context management prevents token overflow LLM Providers Supported: - llama.cpp (Local) - OpenAI - Anthropic Claude - OpenRouter Interaction Modes: - Ask Mode: Read-only questions about current page - Act Mode: Full agent with browser control for automation License: MIT License Developer: Emre Sokullu GitHub: https://github.com/esokullu/webbrain Categories: Productivity, Developer Tools, AI/Machine Learning