Puppeteer is a Node library which provides a high-level API to control Chrome or Chromium over the DevTools Protocol.
Best Ferrum Alternatives ranked by AI · updated Aug 2026
Ferrum is a Ruby browser automation library that controls Chromium through the Chrome DevTools Protocol. It is designed for Ruby developers needing real-browser testing, scraping, screenshots, PDFs, and JavaScript execution.
Top 6 Ferrum alternatives
Capybara is a Ruby library for describing and executing browser-based acceptance and end-to-end tests. It integrates with Rails, RSpec, and Cucumber while...
Pros
- Expressive Ruby DSL for user-facing acceptance tests
- Strong integration with Rails, RSpec, and Cucumber
- Supports lightweight rack-test and JavaScript-capable browser drivers
Cons
- Limited to Ruby applications and Ruby test tooling
- Requires separate drivers for full browser and JavaScript testing
- Less direct access to modern browser features than Playwright
Selenium is an open-source tool for automating web browsers. It provides a set of tools for web application testing across different browsers...
Playwright is an open-source browser automation framework for Chromium, Firefox, and WebKit. Developers can use it to generate PDFs and screenshots while...
Pros
- No per-render API fees when self-hosted
- More control over browsers, navigation, authentication, and JavaScript than Doppio
- Supports Chromium, Firefox, and WebKit
Cons
- Requires hosting, scaling, and maintaining browser workers
- Steeper engineering effort than using Doppio's hosted API
- PDF generation is limited to Chromium-based browsers
Free, open source
5
Cypress is a next-generation front end testing tool built for the modern web. It provides fast, reliable testing for anything that runs...
Pros
- Fast test execution
- Real-time reloads
Cons
- Limited browser support
- No built-in test recording
Free and Paid Plans
6
Watir
Watir contributors
Watir is a Ruby browser automation framework for driving real web browsers through Selenium WebDriver. It serves Ruby developers who want a...
Pros
- Ruby-native API and ecosystem fit Capybara users well
- Provides more direct browser and element control than Capybara
- Uses Selenium's broad browser and driver support
Cons
- Less integrated with Rails and RSpec conventions than Capybara
- Still inherits Selenium's setup and synchronization complexity
- Smaller community and ecosystem than Selenium or Playwright
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