
Description: Watir is an open-source Ruby library for automating web browsers. It drives browsers the same way people do, enabling testing and scripting of web applications. Watir supports IE, Firefox, Chrome, Safari and Opera.
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