
Description: Undertext is an open-source alternative to Grammarly. It is a grammar checker and writing assistant designed to help improve your writing style, catch grammar mistakes, and suggest improvements to make your writing clearer and more effective.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: SolEol is an open-source computer-aided design (CAD) software for solar energy systems. It allows users to model and simulate photovoltaic systems and solar thermal systems. SolEol provides an intuitive graphical interface to design systems and analyze performance.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API