
Description: Codewars is an educational community for computer programming. It offers code challenges known as kata which are ranked by difficulty. Users train on these coding challenges to improve their skills.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: KillerCoder is a lightweight code editor and IDE aimed at web developers. It has support for syntax highlighting, auto-completion, debugging tools, and git integration. KillerCoder is praised for its clean and intuitive interface.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API