Open source web platform, an acronym for Linux, Apache, MySQL and Perl/Python/PHP. LAMP is regarded as a third, up-and-coming alternative to the established mainstream duo of Java and Windows. It consists of the Linux operating system, Apache web server, MySQL database, and any of Perl, Python or PHP, three popular scripting languages for developing server-based applications. All these components are available free of charge, under open source licensing terms. Although lacking the mainstream credibility of its rivals, LAMP is nevertheless surprisingly powerful and robust, and is used by a growing number of commercial websites.