
Description: Windmill is an open source web testing tool that allows users to record and playback user interactions in web applications. It can be used to automate functional testing, load testing, and regression testing.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

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: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API