
Description: Proteus VSM is a versatile circuit simulation and PCB design software tool for electrical and electronic circuit design and analysis. It allows users to perform schematic capture, simulate circuit operation, and layout PCBs.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Qucs-S is an open-source circuit simulator application for RF and microwave circuits. It allows you to design and simulate circuits before physically building them.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API