The best open source alternative to Selenium is UI.Vision RPA. If that doesn't suit you, our users have ranked more than 100 alternatives to Selenium and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Selenium are Playwright, Cypress, TestCafe and Watir.
Open-source task and test automation tool and Selenium IDE. The UI.Vision RPA software is a browser extension that can do desktop automation as well! Use it for web automation, form filling, screen scraping and Robotic Process Automation (RPA).
Playwright is a Node library that automates Chromium, WebKit, and Firefox browsers with a single API for reliable web automation.
Works very well; good docs.
Cypress is a front end automated testing tool created for the modern web. Cypress is built on a new architecture and runs in the same run-loop as the application being tested. As a result Cypress provides better, faster, and more reliable testing for anything that runs in a...
TestCafe is a pure node.js end-to-end solution for testing web apps. It takes care of all the stages: starting browsers, running tests, gathering test results and generating reports. TestCafe doesn’t need browser plugins - it works in all popular modern browsers out-of-the-box.
TestCafe has its own driver for browsers so it's not just another wrapper around Selenium but whole new testing framework on its own. Also provides functionality that was never possible with selenium like testing on remote devices or isolated environment for user roles in one test. Also it's just an npm package so installation and setup is as easy as typing npm install testcafe no more dependencies, no more configuration.
Watir is an open source Ruby library for automating tests. Watir interacts with a browser the same way people do: clicking links, filling out forms and validating text.
CodeceptJS is a modern end to end testing framework with a special BDD-style syntax. The tests are written as a linear scenario of the user's action on a site.
Appium is an open source test automation framework for use with native and hybrid mobile apps.
Appium is a API for testing mobile applications. Whereas the Selenium webdriver is used for testing the desktop and mac browsers. Usually Selenium and Appium is integrated together to increase the automation coverage across desktop, Mac and Mobile platforms.
Selenoid is a free open-source replacement of Selenium Grid running browser tests in Docker containers. It is known to work in big clusters with 5000+ parallel browsers, scales with no downtime and is used all over the world.
Robot Framework is a generic test automation framework for acceptance testing and acceptance test-driven development (ATDD). It has easy-to-use tabular test data syntax and it utilizes the keyword-driven testing approach.
CasperJS is an open source navigation scripting & testing utility written in Javascript for the PhantomJS WebKit headless browser and SlimerJS (Gecko).
Sahi is an automation tool to test web applications. Sahi injects javascript into web pages using a proxy and the javascript helps automate web applications.
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It works with screenshots, not xpath selectors. Kantu is much easier to use, especially on modern websites with tons of Javascript.