Apache is a free and open-source cross-platform web server software.
OpenStreetMap is a free, editable map of the whole world that is being built by volunteers largely from scratch and released with an open-content license.
PHP is a general-purpose scripting language used for web development.
TYPO3 is a free and open-source Web content management system written in PHP.
Unix is a family of multitasking, multiuser computer operating systems.