
Description: Zend Server is a PHP application server that provides performance, reliability, and security for PHP apps. It includes a PHP optimizer, debugger, monitoring tools, and more to improve PHP app development and deployment.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Open Server is a free local server environment for Windows, allowing you to run a web server, FTP server, MySQL and other services on your own computer for development and testing purposes.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API