
Description: Kohctpyktop is a free, open-source parametric 3D modeling application aimed at mechanical engineering and product design. It offers CAD modeling and basic CAM functionality.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: SHENZHEN I/O is a programming puzzle game by Zachtronics where you build circuits using a visual programming language. You are given specifications and must create efficient solutions by combining basic logic gates like AND, OR, etc. It teaches computer engineering concepts in a fun and challenging way.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API