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steel-browser

Free

🔥 Open Source Browser API for AI Agents & Apps. Steel Browser is a batteries-included browser sandbox that lets you automate the web without worrying about infrastructure.

Personal AssistantFreeFree tier
#TypeScript
Type
Open Source
Visit Website GitHub (7.0k stars)

About steel-browser

Steel is an open-source browser API designed to let developers control fleets of headless browsers in the cloud. It provides a simple API endpoint to spin up on-demand browser sessions, handle CAPTCHAs automatically, and run browser automations at scale—from large-scale web scraping to fully autonomous AI agents. With over 800 billion tokens scraped and an average session start time of 1 second, Steel is built for infrastructure-heavy tasks like AI training, RPA, sales automation, QA testing, and customer service agents. The platform is batteries-included, meaning you can focus on building automations without worrying about managing browser infrastructure.

Key Features

Open-source headless browser API for cloud fleets
Sessions API to spin up on-demand browser sessions with a single API call
Built-in automatic CAPTCHA solving
Fast average session start time of 1 second
Scalable to billions of tokens and millions of browser hours
Batteries-included infrastructure—no need to manage servers

Pros & Cons

Pros
  • Open source with cloud scalability
  • Simple API for browser management
  • Built-in CAPTCHA solving reduces friction
  • Fast session startup (1 second average)
  • Proven at massive scale (800B+ tokens, 1M+ hours)

Best For

AI Agents and autonomous web navigationFoundational model training data collectionAI shopping assistantsWeb scraping at scaleRobotic Process Automation (RPA)Sales automation and lead generationQA software and end-to-end testingCustomer service agent automations

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