Selenium (software)

Selenium
Initial release2004 (2004)
Stable release
4.39.0  / 6 December 2025 (6 December 2025)
Written inSelenium Server: Java; Selenium WebDriver (works without Selenium Server), official support: JavaScript (Node.js), Python, Ruby, Java or C#
Operating systemCross-platform
TypeSoftware testing framework for web applications
LicenseApache License 2.0
Websiteselenium.dev 
Repository

Selenium is an open source umbrella project for a range of tools and libraries aimed at supporting browser automation. It provides a playback tool for authoring functional tests across most modern web browsers, without the need to learn a test scripting language (Selenium IDE). It also provides a test domain-specific language (Selenese) to write tests in a number of popular programming languages, including JavaScript (Node.js), C#, Groovy, Java, Perl, PHP, Python, Ruby and Scala. A C++ wrapper exists on its git page, but has not been updated in years. Selenium runs on Windows, Linux, and macOS. It is open-source software released under the Apache License 2.0.