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Platforms Supported by Selenium

We take compatibility seriously - that's why Selenium works with many browsers, operating systems, programming languages and testing frameworks. From Firefox to JUnit, we've got you covered.



Support for Firefox is the latest release, the previous release, the latest ESR release and the previous ESR release.

For example Selenium 2.40.0 (released on Feb 19, 2014) supports Firefox 27, 26, 24, 17

Selenium with Firefox can be run on any platform that Firefox supports for those versions, that also allow users to install a custom Firefox extension.

Internet Explorer

Versions 7, 8, 9, 10 and 11 are supported. Version 11 requires additional configuration.

The selenium project tests each release on Windows 7.


SafariDriver requires Safari 5.1+ (Note, due to Apple potentially dropping support > Safari 6.X for Windows, new developments in the bindings may not work in the Windows platform)


OperaDriver is supported by Opera Software, refer to their documentation for supported versions.


ChromeDriver is supported by the Chromium project, please refer to their documentation for any compatibility information

Operating Systems

Microsoft Windows

Most versions of MS Windows that are currently still supported by Microsoft should work with Selenium. Although we currently run tests before each release against Windows 7. This does not mean Selenium won't attempt to support different versions of Windows. This only means we don't continually run tests on other particular version of Windows.

Apple OS X

We currently do not use any version of OS X in our automated tests against the selenium project. However most developers on the project are using a recent version of OS X and we'll continue to support the current stable release and often the previous release.


We test mainly on Ubuntu, but other variations of Linux should also work where the browser manufacturers support them.

Programming Languages & Frameworks

Programming languages are supported through Selenium "drivers." These are libraries made for each language that expose commands from the Selenium API natively in the form of methods/functions.

Selenium is often used for automating web applications for testing purposes, but it does not include a testing framework. Some testing frameworks that can be used with Selenium are listed below.


Frameworks available: NUnit



Frameworks available: JUnit, TestNG


Frameworks available: WebdriverJS, WebdriverIO, NightwatchJS, NemoJS




Frameworks available: Behat + Mink


Frameworks available: unittest, pyunit, py.test, robot framework



Frameworks available: RSpec, Test::Unit