Selenium review
A free browser automation standard with broad language, browser, and execution options.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Selenium is an open-source suite for automating web browsers, aimed primarily at developers and QA teams building browser-based regression and end-to-end tests. Its WebDriver component provides language-specific client bindings and a standard API for controlling browsers locally or remotely. Selenium IDE adds record-and-playback authoring, while Selenium Grid distributes WebDriver scripts across remote machines, browsers, versions, and operating systems. The project has been established since 2004 and supports web, Chrome extension, API, and self-hosted use cases.
The strongest fit is its depth as a browser automation standard. WebDriver supports native browser control and the W3C WebDriver standard, with testing across multiple browser engines and operating systems. Teams can capture browser and element screenshots, run tests in parallel across multiple machines, and use Selenium Grid for remote execution. Language-specific bindings make code-based authoring practical for engineering teams, while Selenium IDE offers a lower-code entry point for recording and replaying browser interactions. Mobile web testing is also included in its category support.
Selenium is free and open-source, with the project code and documentation licensed under Apache 2.0. Its platform breadth and self-hosted model suit teams that want control over execution environments and are prepared to manage their own test infrastructure. The main limitation is scope: Selenium does not include a testing framework, so teams typically pair it with a language-specific test runner. Choose Selenium when browser control, language flexibility, parallel execution, and self-hosting matter most. Consider an alternative when a managed service or an integrated testing framework is a higher priority.
Selenium pros and cons
- Where it wins
- Free, open-source browser automation with Apache 2.0 licensing
- WebDriver, Selenium IDE, Grid, parallel execution, and cross-browser testing
- Supports multiple languages, remote execution, and self-hosted runners
- Where it doesn't
- Does not include a testing framework or built-in test runner
- Requires teams to pair Selenium with a language-specific test runner
- Broader setup and maintenance responsibilities than a hosted testing service
Selenium fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update