
Description: .NET Regular Expression Designer is a free open source tool by Microsoft that allows developers to visually create, test, and debug .NET regular expressions. It has features like syntax highlighting, testing against sample text, and explanation of regex components.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Regexenator is a free online tool for building, testing, and debugging regular expressions. It provides an intuitive interface with syntax highlighting, explanations, cheat sheets, and live testing to help you construct accurate regex patterns.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API