
Description: TkGate is an open-source digital logic circuit and schematic editor. It allows users to draw logic gate diagrams and simulate their operation. It has features for hierarchical design and is aimed primarily at education and prototyping.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: CircuitVerse.org is an open-source online platform for creating and simulating digital logic circuits. It allows designers to build and test circuits without any hardware, using a simple drag-and-drop interface.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API