
Description: MyTetra is a free and open source application for designing and simulating electronic circuits. It provides a user-friendly and streamlined workflow for circuit design, simulation, checking, and PCB layout.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Notefrog is a free note taking and organization app for Windows. It allows users to create multiple notebooks to store notes, thoughts, web links, documents, and more. Key features include tagging, searching, note formatting, and syncing across devices.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API