
Description: Ruby on Rails is an open-source web application framework written in the Ruby programming language. It follows an MVC architecture and aims to optimize programmer happiness and productivity. Rails emphasizes conventions over configuration and favors rapid prototyping.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: The Play Framework is an open-source web application framework that follows the model–view–controller architectural pattern. It is written in Scala and Java and allows rapid application development by using convention over configuration, hot code reloading and display of compilation errors in the browser.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API