Nanobrowser
by Nanobrowser
Nanobrowser is an open-source Chrome extension for running AI-assisted web automation workflows in the browser. It supports multiple large-language-model providers and coordinates agents to complete multi-step web tasks.
Why Abandoned
The official website and public GitHub repository remain available, with the repository documenting installation and current use. No verified acquisition or shutdown announcement was found; confidence is moderated because lifecycle activity can change.
💵 Pricing & access
- Pricing model
- Not documented
- Starting at
- Not documented
- Official site
- Visit Nanobrowser →
🩺 Health Signals
- HTTP Status
- 200
- Response
- —
- SSL
- —
- Confidence
- 78%
- Domain expires
- —
- Last content change
- —
- Last tweet
- —
- API status
- —
📅 Timeline
Public GitHub repository created
Nanobrowser announced publicly
🔄 Alternatives to Nanobrowser
Bardeen
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Perplexity AI
🟢ActiveAI-powered answer engine that provides cited, real-time answers to complex questions.
You.com
🟢ActiveAI search engine offering summarized answers with source citations and app integrations.
🪦 Other dead AI Browsers tools
Mighty
🟡Acquired / MergedMighty was a Chromium-based web browser that streamed browser workloads from cloud servers to users’ computers. The company later pivoted to an AI product before its team joined Google in 2023.
SigmaOS
🟠Possibly DeadSigmaOS is a macOS-focused browser organized around workspaces and vertical tabs. It later added AI features such as Airis for asking questions, summarizing pages, and assisting with web-based research.
OpenAI Operator
🔴Shutdown / DeadOperator was OpenAI’s browser-using research-preview agent for completing web tasks through a visual browser. Its core capabilities were later integrated into ChatGPT agent mode, and the standalone Operator site was sunset.
Kognitos Konverge
🟠Possibly DeadKognitos Konverge was presented as a generative AI browser for interacting with business applications and automating work through natural-language instructions. Its former product page now redirects to Kognitos’ main site.
❓ Frequently Asked Questions
What is Nanobrowser?
Nanobrowser is an open-source Chrome extension that uses AI agents to automate multi-step tasks on websites from within the browser.
How does Nanobrowser work?
Users describe a task in natural language, and Nanobrowser coordinates browser agents that inspect pages, plan steps, interact with websites, and report results.
Is Nanobrowser open source?
Yes. Its source code is published on GitHub under the MIT License, according to the repository.
Which AI models does Nanobrowser support?
The project documentation lists support for several model providers, including OpenAI, Anthropic, Google Gemini, DeepSeek, Ollama, and OpenRouter. Supported integrations may change by release.
Is Nanobrowser free to use?
The extension's source code is free under the MIT License, but users may incur charges from whichever hosted model provider they connect. Local-model costs depend on the user's own hardware and setup.