
Description: LDCad is a free and open source software for designing LEGO models in CAD programs and generating assembly instructions. It is especially popular within the 3D LEGO building community, allowing enthusiasts to easily share and execute LEGO creations.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Stud.io is a free, open source Lego CAD software that allows users to digitally build Lego models. It has a large library of Lego parts and intuitive building tools for creating detailed Lego designs.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API