Differences between Wikipedia, Wikimedia, MediaWiki, and wiki/lb

Sidd Dir verluer tëscht de Begrëffer MediaWiki, Wikimedia, Wikipedia a Wiki?

Wiki
Wiki ass en allgemeng benotzte Begrëff deen en Internetsite beschreift, dee vu jiddwerengem (esouwuel engem ageschriwwene Benotzer wéi engem anonyme Visiteur) geännert ka ginn.
 * wiki (as an adjective), "the wiki way", and the antonym un-wiki are also used to describe the community-oriented philosophy that goes with such a system (e.g. "that's not a very wiki way of doing things").
 * Wiki (with a capital 'W') is an incorrect term, although it has sometimes been used to refer to either Wikipedia or the Portland Pattern Repository (also known as WikiWikiWeb), which was the first wiki to be created.
 * wiki software and wiki engine are terms referring to pieces of software that power wiki-based websites. There are many different types of wiki software; some very simple, others with advanced features. See also: Wikipedia's entry on "wiki software".

"Fir méi eng "komplett" Beschreiwung kuckt op Wikipedia de Begrëff "Wiki"."

Wikimedia
Wikimedia is the collective name for the Wikimedia movement, revolving around a group of inter-related projects, including Wikipedia, Wiktionary, Wikiquote and others, which aim to use the collaborative power of the Internet, and the wiki concept, to create and share free knowledge of all kinds.
 * The term Wikimedia servers is often used, referring to the computer hardware on which all Wikimedia projects are hosted.
 * Wikimedia Deutschland, Wikimedia Russia asw. si keen Deel vun der Wikimedia Foundation, awer gewéinlech sinn et Organisatiounen déi mat der Wikimedia Foundatin zesummeschaffen.
 * The Wikimedia Meta-Wiki, commonly referred to as Meta, is the wiki used to discuss issues which affect all Wikimedia projects. See also: About.
 * Meta däerf net mat MetaWiki  verwiesselt ginn, eng Sichmaschinne déi net Deel vun de Projete vu Wikimedia ass.

Wikipedia
Wikipedia? Wikipedia ass [//www.wikipedia.org/ Wikipedia], Déi Fräi Enzyklopedie . Wie kennt Wikipedia net? ;)

MediaWiki
MediaWiki ass d'Software. Dëse spezielle Wiki-Programm gëtt vu Wikipedia an anere Wikimedia-Projete benotzt. Si ass fräi disponibel fir Anerer fir de Gebrauch (a si däerf verännert ginn) a si gëtt op ville verschiddene Site vu vill verschiddene Projete rondrëm d'Welt benotzt.

Kuckt och Wéi Wikipedia funktionéiert?, Siten déi MediaWiki benotzen, How to become a MediaWiki hacker.

Video

 * [//www.youtube.com/watch?v=gXD1TRGafQ0 The State of Wikipedia] op YouTube