
Description: HTMLPen.com is a free online HTML editor that allows you to write, edit and preview HTML code in real-time. It has a clean interface with syntax highlighting and other handy coding features.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Kate is a free and open-source advanced text editor for Linux, UNIX, Windows and macOS. It provides syntax highlighting, project management, plugins and other features for programmers and developers.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API