
Description: Logical Circuit is an open-source digital circuit design and simulation software. It allows users to design, test and debug digital logic circuits without physically building them. Some key features include a simple graphical interface, ability to simulate circuits in real-time, extensive component libraries and support for common logic gates, flip flops, multiplexers etc.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Hradla is an open-source alternative to Sketch and Adobe XD for interface design and prototyping. It provides a clean and intuitive interface for designing mobile and web mockups with support for layers, symbols, colors, typography and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API