
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: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: SR 3D Builder is a simple and free 3D modeling software suited for beginners. It allows you to easily create 3D models using simple shapes and mesh editing tools. Useful for basic 3D design and printing.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API