Ubuntu

Ubuntu is a free and open source operating system and Linux distribution based on Debian. Ubuntu is offered in three official editions: Ubuntu Desktop for personal computers, Ubuntu Server for servers and the cloud, and Ubuntu Core for Internet of things devices. New releases of Ubuntu occur every six months, while long-term support (LTS) releases occur every two years.

Ubuntu is produced by Canonical and the community in a meritocratic governance model. Canonical provides free guaranteed security updates and support for each Ubuntu release, starting from the release date and until the release reaches its predesignated end-of-life (EOL) date. Canonical generates revenue through the sale of premium services related to Ubuntu.

Ubuntu is named after the Southern African philosophy of ubuntu (literally, 'human-ness'), which Canonical suggests can be loosely translated as "humanity to others" or "I am what I am because of who we all are".

Ubuntu is the most popular operating system for the cloud, and is the reference operating system for OpenStack