Nanobrowser
An open-source browser extension that uses planner and navigator agents with your chosen language models to automate tasks across websites.
About Nanobrowser
Users need to automate multi-step browser work while choosing the models that plan and execute each task.
Who it’s for
- People automating repetitive web tasks
- Developers experimenting with browser agents
When to consider it
Consider Nanobrowser when you want browser automation in a side panel with configurable models for planning and navigation.
Tradeoffs & limitations
- The extension is Apache-2.0 licensed and has no subscription fee, but you supply model access and pay any provider usage charges.
- Chrome and Edge are officially supported; Firefox, Safari and other browser variants are not supported.
SOTA overview · Documentation-based assessment · Sources & review method
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Sources & review method
Documentation-based assessment · Oct 5, 2026 · Prepared with AI assistance; not a hands-on benchmark.
- Nanobrowser official website
- Nanobrowser repository and installation guide
- Nanobrowser Apache-2.0 license
- Nanobrowser October 2 commit
Checked by SOTA · AI-assisted documentation review. Selection advice is our assessment; verify current requirements for your deployment.
Import history & original evidence
Nanobrowser official website
An open-source browser extension that uses planner and navigator agents with your chosen language models to automate tasks across websites.
Based on official pages and announcements checked on 2026-10-05. No hands-on test, performance benchmark or popularity ranking is claimed.