Mamp is a nice amp stack! The acronym MAMP refers to a set of free software programs commonly used together to run dynamic web sites on servers running Apple's proprietary operating system, Mac OS X:
Mac OS X, the operating system;
Apache, the Web server;
MySQL, the database management system (or database server);
Open Social is a distribution for building social communities and intranets. The distribution is positioned as the successor of Drupal Commons, taking full advantage of the new possibilities of Drupal 8.