Ubuntu OS

Example(s):
- Ubuntu 12.04.5 LTS.
- Ubuntu 14.04.3 LTS.
- Ubuntu 16.04 LTS (2016-04-21), support until 2021-04.
- Ubuntu 18.04 LTS (2018-04-26), support until 2023-04.
- …
Counter-Example(s):
- MacOS.
See: Free Software, Canonical Ltd., Open Source.

References

(Wikipedia, 2015) ⇒ http://en.wikipedia.org/wiki/Ubuntu_(operating_system) Retrieved:2015-11-16.
- Ubuntu (originally , according to the company website ) is a Debian-based Linux operating system and distribution, with Unity as its default desktop environment for personal computers including smartphones in later versions. Ubuntu also runs network servers. It is based on free software and named after the Southern African philosophy of ubuntu (literally, "human-ness"), which often is translated as "humanity towards others" or "the belief in a universal bond of sharing that connects all humanity". Development of Ubuntu is led by UK-based Canonical Ltd., a company owned by South African entrepreneur Mark Shuttleworth. Canonical generates revenue through the sale of technical support and other services related to Ubuntu. The Ubuntu project is publicly committed to the principles of open-source software development; people are encouraged to use free software, study how it works, improve upon it, and distribute it.