
Description: IDA-STEP Viewer is a free, open source CAD viewer that supports STEP (STandard for the Exchange of Product model data) files. It allows users to open, view and investigate STEP files containing 3D mechanical CAD models.
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