
Description: AresEd is a free, open source level editor for creating and editing game levels and mods. It features support for visual WYSIWYG editing, terrain sculpting tools, entity and script placement, and integration with Source engine games like Counter-Strike and Half-Life 2.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: The Castle Game Engine is a cross-platform, open source game engine for 2D and 3D games. It supports multiple programming languages and can export games to many platforms including Windows, macOS, Linux, Android, iOS, and web browsers.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API