One of the most popular software used for the development of Web servers is Open Server, which is a portable local web server on WAMP platform. It has all the features for comfortable and productive work of web developers. WAMP is an acronym for four software products; Windows, Apache, MySQL and PHP. As you know, Windows is the most widely used operating system worldwide, Apache - the most popular web server, MySQL - most convenient and functional database management system and PHP - most widely used language in web application development. Open Server comes with a comprehensive array of tools for web development.