Webbrain

Open-source AI browser agent for Chrome and Firefox (monorepo) 🧠

LLM Mart
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Webbrain screenshot

WebBrain is a free, open-source browser extension that brings AI agent capabilities to your browser. It offers a read-only Ask Mode by default and a full Act Mode for automation. It works with local llama.cpp, OpenAI, Claude, and OpenRouter via its multi-provider LLM support.

It is available for Chrome, Edge, and Firefox, with no account required. It prioritizes privacy with no telemetry, no tracking, and no accounts. It is released under the GPL-3.0-or-later license.

It can extract structured data from pages like tables, lists, links, and forms.

Summary drafted from the project's own website. Every sentence is backed by text on that page and was reviewed before publishing.

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