Nabsun - an open-source Chromium browser with a built-in AI assistant that can click, type, and fill in forms for you (local model included, MIT licensed)

Nabsun is an open-source Chromium/Electron browser with an AI assistant in the side panel that reads pages, clicks, types, and fills forms in open tabs, requiring approval for state-changing actions. It ships with a local Qwen3 1.7B model running on CPU with no account or API key, and also supports Ollama, Anthropic/OpenAI keys, Claude Code, or Codex CLI. It is MIT licensed, acts as an MCP server and can use other MCP servers, but is an early developer preview for Windows only, without code signing or auto-update.

for who

Developers exploring AI-powered browsing or MCP integrations

why now

New MIT-licensed browser with local AI agent, early preview, offers offline automation now.

what changes

They can let an AI agent act directly in their signed-in browser tabs, with explicit approval prompts and the choice of local or cloud models

to do

Download the Windows preview, test the approval/permission model, and provide feedback on GitHub