
Description: CheckIO is an online platform for learning and practicing programming through solving code challenges. It provides bite-sized coding puzzles of increasing difficulty that allow users to improve their coding skills in Python and JavaScript.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Exercism is an open source online platform that provides programming exercises and mentoring for people looking to improve their coding skills. Users can access challenges in over 50 programming languages and get feedback from mentors.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API