browser-use vs nanobrowser
The standard library for letting AI agents drive a real browser — click, type, fill forms and complete tasks from a natural-language goal. 100k+ stars, Python. — versus — Chrome extension running a Planner/Navigator multi-agent loop inside the browser you already use, with your own API keys — a free, local alternative to OpenAI Operator.
Same job, opposite packaging: browser-use is a Python library you script around a driven browser (headless, CI, servers); nanobrowser is an extension that runs in the browser you're already using, with your logged-in sessions.
| browser-use | nanobrowser | |
|---|---|---|
| Stars | 110k | 14k |
| Forks | 12k | 1.4k |
| Language | Python | TypeScript |
| License | MIT | Apache-2.0 |
| Last activity | 2 days ago | 6 days ago |
| Topics | agents, web | web, agents |
| Curated connections | 12 | 4 |
browser-use — the curator's take
When the task lives behind login walls, forms and JavaScript — 'book this', 'apply to that', 'put these in my cart' — this is the default tool: it feeds the agent a cleaned DOM, executes its clicks/typing, and recovers from the endless weirdness of real websites. Install-as-skill support means Claude Code/Cursor agents pick it up in one prompt. NOT for bulk data extraction — an LLM driving a browser is the slowest, most expensive way to scrape a thousand pages (use a crawler); and treat any agent-with-a-browser as having the keys to whatever it's logged into — sandbox accordingly.
nanobrowser — the curator's take
The lowest-friction way to get an agent driving a real, already-logged-in browser: install from the Web Store, paste keys, assign a cheap model to the Navigator and a strong one to the Planner, watch it self-correct in the side panel. Everything stays in the tab, which is exactly the tradeoff — great for privacy and for sites that demand your session, useless for headless runs, CI or fleets, and Chrome/Edge only. You are the sandbox: it can act inside every account that browser is signed into, so supervise it rather than leaving it unattended. Server-side or scripted automation belongs in a library or a CDP server instead.