
Description: GNU M4 is an implementation of the M4 macro processor. It is used for text processing and can generate program source code and other text documents from macros. M4 macros allow reuse and abstraction of text snippets.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: PP is a general-purpose preprocessor that allows you to define macros, include files, and perform conditional compilation for various programming languages. It is lightweight, fast, and customizable.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API