
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: Codility is an online platform for assessing and developing programming skills through timed coding challenges and automated testing. It allows companies to evaluate candidates' coding abilities.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API