
Description: Digital Logic Sim is an open-source digital logic circuit simulator software. It allows users to design and test combinational and sequential logic circuits using common logic gates like AND, OR, NOT, NAND, NOR, XOR, XNOR, etc.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

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: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API