nanobrowser
Open-Source Chrome extension for AI-powered web automation. Run multi-agent workflows using your own LLM API key. Alternative to OpenAI Operator.
A free in-browser alternative to OpenAI Operator using your own LLM keys.
You rely on small local models — they need cleaner prompts and more iterations.
About nanobrowser
Nanobrowser is an open-source AI web automation tool that runs in your browser. A free alternative to OpenAI Operator with flexible LLM options and multi-agent system.
Support the project by sponsoring us - every contribution helps keep Nanobrowser free and open source!
Nanobrowser's multi-agent system analyzing HuggingFace in real-time, with the Planner intelligently self-correcting when encountering obstacles and dynamically instructing the Navigator to adjust its approach—all running locally in your browser.
nanobrowser is an open-source project written primarily in TypeScript, with 14k stars on GitHub. It was last updated in August 2026.
nanobrowser vs. the alternatives
All 21 alternatives →| Record | Stars | Pricing | ||
|---|---|---|---|---|
| nanobrowserthis listing | 14k | TypeScript | Apache-2.0 | Open source |
| Browser Use | 117k | Python | MIT | Open source |
| UI-TARS-desktop | 39k | TypeScript | Apache-2.0 | Open source |
| page-agent | 29k | TypeScript | MIT | Open source |
| Stagehand | 25k | — | MIT | Open source |
| skyvern | 23k | Python | AGPL-3.0 | Open source |
