
Description: RegexPal is a free regular expression tester and visualizer. It allows you to easily test regex patterns, analyze them and understand how they work. Useful for learning and debugging regular expressions.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Kodos is an open-source alternative to Photoshop focused on bitmap image editing. It has advanced features for selections, layers, masks, filters and adjustments while maintaining a simple and intuitive interface.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API