
Description: CircuitJS1 Desktop Mod is an open source circuit simulator for electronics. It allows users to design and test electronic circuits virtually. The desktop mod provides extra features like exporting circuit designs.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Circuit Builder is a free online tool for building and simulating electronic circuits. It allows users to easily create schematics with a drag-and-drop interface and analyze circuit behavior with built-in simulation features.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API