
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: DevScreen is a developer-focused screen recording and annotation software. It allows developers to easily record their screens, annotate areas of interest, capture system metrics, and share videos of bugs/issues. Useful for documenting processes, creating tutorials, sharing product demos, debugging code, etc.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API