
Description: Not Doppler is a free gaming website featuring a wide variety of browser-based games across multiple genres. It offers fun, casual games that don't require any downloads, ranging from puzzles and physics games to arcade, strategy, and sports games.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: ArcadeOK is a free and open-source game engine for creating 2D arcade video games. It allows developers to easily build retro-style games with pixel art graphics, chiptune sounds, and classic arcade gameplay mechanics.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API