
Description: STP Viewer is a free software tool for viewing and analyzing STP network protocol data. It allows you to load capture files, inspect STP frames and BPDUs, analyze STP topology and events, and gain insights into Spanning Tree operations.
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