
Description: JustChess is a free and open-source chess engine for Windows, Linux and Mac. It features 2D and 3D graphics, online multiplayer, game analysis tools, and support for chess variants like Fischer Random Chess.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Chess.com is a popular website and app for playing chess online. With over 30 million members, it allows you to play chess games through your web browser or mobile device against opponents of varying skill levels.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API