
Description: VariCAD Viewer is a free CAD software that allows you to view, measure, and print CAD models. It supports many common CAD formats like DWG, DXF, and STEP. Useful for collaborating on design projects when you don't need full CAD editing capabilities.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: 3D-Tool is a free and open-source 3D modeling software. It allows users to create, edit, and view 3D models with basic geometrical primitives and polygons. It has a simple interface aimed at beginners.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API