Why is Ubuntu named Ubuntu?

Ubuntu is a South African ethical ideology focusing on people's allegiances and relations with each other. The word comes from the Zulu and Xhosa languages. Ubuntu is seen as a traditional African concept, is regarded as one of the founding principles of the new republic of South Africa and is connected to the idea of an African Renaissance.

Source: https://help.ubuntu.com/10.04/about-ubuntu/C/about-ubuntu-name.html

Also this is the release naming scheme: https://wiki.ubuntu.com/DevelopmentCodeNames

From About the Name, viewed with the Wayback Machine:

Ubuntu is a South African ethical ideology focusing on people's allegiances and relations with each other. The word comes from the Zulu and Xhosa languages. Ubuntu is seen as a traditional African concept, is regarded as one of the founding principles of the new republic of South Africa and is connected to the idea of an African Renaissance.

A rough translation of the principle of Ubuntu is "humanity towards others". Another translation could be: "the belief in a universal bond of sharing that connects all humanity".

"A person with ubuntu is open and available to others, affirming of others, does not feel threatened that others are able and good, for he or she has a proper self-assurance that comes from knowing that he or she belongs in a greater whole and is diminished when others are humiliated or diminished, when others are tortured or oppressed."

     — Archbishop Desmond Tutu

As a platform based on Free software, the Ubuntu operating system brings the spirit of ubuntu to the software world.

Ubuntu in the Xhosa language means "I am because we are".