
Description: SlimerJS is a scriptable browser for web scraping and testing, similar to PhantomJS, based on Gecko and Firefox. It provides a JavaScript API for controlling a browser to load pages, extract content, run tests, take screenshots, etc.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Selenium is an open-source automated testing framework used to test web applications across different browsers and platforms. It can be used to automate tasks like testing user interfaces, validating functionality, performance testing, etc.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API