Apache is a free and open-source cross-platform web server software.
Google Analytics is a free web analytics service that tracks and reports website traffic.
PHP is a general-purpose scripting language used for web development.
RevolverMaps is a collection of real-time visitor statistics widgets for website or blog. Interactive visitor mappings to a globe rendered by the Revolver Engine.
Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.