
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: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Logisim is an open-source digital logic circuit simulator designed for educational purposes. It allows users to design and simulate logic circuits consisting of gates, wires, inputs and outputs.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API