
Description: appserver.io is an open-source application server and web framework written in PHP. It supports building REST APIs and web applications using modern PHP features. The goal of appserver.io is to provide high performance and scalability for PHP-based applications.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Apache Geronimo is an open-source application server that implements Java Enterprise Edition specifications. It provides a modular, extensible runtime environment for enterprise Java applications.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API