Browser & Computer-Use Agentsfree

Nanobrowser

Chrome extension that runs a multi-agent team to automate browsing tasks

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What Nanobrowser does

  • Chrome extension that runs a multi-agent team to automate browsing tasks
  • Uses your own API keys or local models, so nothing extra is charged
  • Everything runs locally in the browser and is open source
  • Free alternative to paid browser operator agents

Nanobrowser — straight answers

What is Nanobrowser?

Nanobrowser is listed under Browser & Computer-Use Agents, in the AI Agents & Automation category on Flocci AI Tools. Chrome extension that runs a multi-agent team to automate browsing tasks. It is free, with no paid plan attached, and it lives at github.com.

Is Nanobrowser free?

Nanobrowser is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 397 entries on Flocci AI Tools with no upgrade path built in.

Can I use Nanobrowser in a browser, or is there an app?

Nanobrowser needs to be installed or self-hosted — it doesn't run in a browser tab. It is available on a Chrome extension.

What can Nanobrowser do?

Nanobrowser does 4 things the catalog singles out: Chrome extension that runs a multi-agent team to automate browsing tasks; uses your own api keys or local models, so nothing extra is charged; everything runs locally in the browser and is open source; free alternative to paid browser operator agents.

What is the best free alternative to Nanobrowser?

Alibaba Page Agent is the closest free alternative: it sits in the same Browser & Computer-Use Agents sub-category and is free. Amazon Nova Act SDK, BrowserOS and MagenticLite also start free. The full list is on the alternatives page.

See the full list →

Nanobrowser alternatives

Compare all alternatives →

Browser Use

Browser & Computer-Use Agents
freemium
  • Open-source library to run browser agents locally for free
  • Hosted agent API billed per token + browser-hour
  • Managed browser infrastructure for scaling agents
Visit

Browserbase

Browser & Computer-Use Agents
freemium
  • Free tier: 1 browser-hour/month, 3 concurrent browsers, 3 agent runs
  • Creator of Stagehand, an AI-native browser automation framework
  • Agent identity management for logging into restricted sites
Visit

Skyvern

Browser & Computer-Use Agents
freemium
  • Vision+LLM based automation that survives UI/DOM changes (no brittle selectors)
  • 22,700+ GitHub stars, self-hostable via Docker
  • Used by 500+ enterprises for workflow automation on arbitrary sites
Visit

Steel.dev

Browser & Computer-Use Agents
freemium
  • Open-source browser API for fleets of cloud browsers
  • Free launch tier with one-time starting credits, no card required
  • Built-in auto-CAPTCHA solving and proxy management, sessions up to 24h
Visit

Firecrawl

Browser & Computer-Use Agents
freemium
  • Converts any site into clean LLM-ready markdown/structured data
  • Free tier: 1,000 credits/month, no card required
  • Crawl, scrape, map and search endpoints purpose-built for RAG/agent pipelines
Visit

Playwright MCP

Browser & Computer-Use Agents
free
  • Official Microsoft MCP server exposing Playwright browser control to any MCP client
  • Uses accessibility snapshots instead of screenshots/vision, faster and more deterministic
  • 36k+ GitHub stars, Apache-2.0 licensed
Visit

Head-to-head comparisons

Nanobrowser vs Browser UseNanobrowser vs BrowserbaseNanobrowser vs SkyvernNanobrowser vs Steel.devNanobrowser vs FirecrawlNanobrowser vs Playwright MCP