Linux

Linux is an open-source operating system based on Linux kernel released under GNU General Public License (GPL). First released in 1991 by Linus Torvalds.

There are several different distributions to choose from, the most popular are Ubuntu, Debian and Fedora.

LAMP-stack is a bundle of software used to build and manage websites and applications. LAMP is an acronym for Linux, Apache, MySQL and PHP (Perl or Python).