
Description: Project Euler is a website dedicated to a series of computational problems intended to be solved with computer programs. The problems involve mathematics and logic puzzles that require knowledge of math and programming to solve.
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