
Description: HackerRank is an online platform that provides coding challenges and contests to help developers improve their programming skills. It offers practice problems across various languages and computer science domains like algorithms, machine learning, and security.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: CodinGame is an online platform for coding challenges and programming puzzles. It allows developers to practice and improve their coding skills in different programming languages through fun games and competitions.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API