
Description: Circuit Tree is an open-source electronics design automation software focused on creating schematics and PCB layouts. It features an intuitive graphical user interface along with powerful tools for schematic capture, PCB layout, autotracing and more.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: ModelSim is a digital circuit simulator used for simulating and debugging HDL designs like VHDL, Verilog, and SystemVerilog. It enables functional and timing simulations of RTL designs before synthesis to verify functionality.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API