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Nanobrowser

4.4/5Free / Open Source
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A free, open-source Chrome extension that runs a multi-agent AI system in your own browser to automate web tasks — using your own API keys, with no cloud service. Nanobrowser is a private, self-hosted alternative to paid browser agents.

What is Nanobrowser?

A free, open-source Chrome extension that runs a multi-agent AI system in your own browser to automate web tasks — using your own API keys, with no cloud service. Nanobrowser is a private, self-hosted alternative to paid browser agents.

Nanobrowser sits in the agents category and is listed in the AIverse AI tools directory, where it holds an editorial rating of 4.4 out of 5 based on its capabilities, usability, value for money and reliability. It is developed by Nanobrowser, founded in 2024.

Nanobrowser features and use cases

People typically use Nanobrowser for Private web automation, Research & data gathering, Repetitive browsing tasks and Self-hosted browser agent.

It is often associated with Open Source, Browser Agent, Chrome Extension and Privacy.

Nanobrowser pricing

Nanobrowser is completely free (Free / Open Source). You can use it without a subscription.

As with any AI tool, the right plan depends on how heavily you use it. We recommend trying Nanobrowser before committing to a paid plan.

Is Nanobrowser worth it? Our bottom line

Overall, Nanobrowser is a strong choice in the agents category for 2026. Its standout strengths include Runs multi-agent AI in your browser and Use your own API keys. Bear in mind Needs your own LLM keys and Browser-bound tasks. If it matches your workflow, Nanobrowser is well worth a try — especially since you can start for free.

✅ Our verdict

Nanobrowser is a free, open-source browser agent that runs multi-agent automation right in your Chrome, with your own API keys and no cloud. A private, no-subscription alternative to paid web agents for anyone comfortable bringing their own model.

👍 Pros

  • +Runs multi-agent AI in your browser
  • +Use your own API keys
  • +Private — no cloud service
  • +Free and open source
  • +Easy Chrome extension

👎 Cons

  • −Needs your own LLM keys
  • −Browser-bound tasks
  • −Reliability varies by site
  • −Newer project

🎯 Use cases

Private web automationResearch & data gatheringRepetitive browsing tasksSelf-hosted browser agent

ℹ️ Key facts

Company
Nanobrowser
Founded
2024

Last updated: Aug 2026

4.4
Rating
10.0k
Views
Free
Pricing

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Try Nanobrowser Now

A free, open-source Chrome extension that runs a multi-agent AI system in your own browser to automate web tasks — using your own API keys, with no cloud service. Nanobrowser is a private, self-hosted alternative to paid browser agents.

Try Free ⚡ Compare Nanobrowser🔁 Nanobrowser Alternatives

❓ Frequently Asked Questions

Is Nanobrowser free?

Yes, Nanobrowser is completely free to use, with no paid plan required to access its core features.

What is Nanobrowser used for?

Nanobrowser is an AI AI agent tool. A free, open-source Chrome extension that runs a multi-agent AI system in your own browser to automate web tasks — using your own API keys, with no cloud service. Nanobrowser is a private, self-hosted alternative to paid browser agents. It currently holds a 4.4/5 rating on Aiverse from real users.

Is Nanobrowser worth it in 2026?

Nanobrowser is a solid choice with a 4.4/5 rating on Aiverse — a reliable option in the AI agent category, though it's worth comparing alternatives below for your specific needs.