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

Bist du verwirrd über die Unterschiede zwischen "MediaWiki", "Wikimedia", "Wikipedia" und einem "Wiki"?

Wiki
Wiki is a generic term which is used to describe a certain kind of collaborative website that can be edited by any user and/or visitor; it is not a proper noun.
 * wiki(als Adjektiv), und das Antonym un-wiki werden benutzt um im Englischen eine Community-orientierte Philisophie zu beschreiben("that's not a very "wiki" way of doing things"| dt. Das ist keine sehr gemeinschaftliche Art jene Dinge zu tun).
 * 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".

For a more complete description, see Wikipedia's entry on "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.

Wikimedia is also the short name for the Wikimedia Foundation, a non-profit organization headquartered in San Francisco that runs these projects.
 * The term Wikimedia servers is often used, referring to the computer hardware on which all Wikimedia projects are hosted.
 * Wikimedia Deutschland, Wikimedia Russia etc. are the names of dozens local chapters of enthusiasts of Wikimedia projects. They are independent from the Wikimedia Foundation and the Wikimedia projects. Wikimedia, depending on the context and locale, is often incorrectly used as short name for the Wikimedia projects, or a chapter, or the Wikimedia Foundation (the latter can happen also on this wiki).
 * Das Wikimedia Meta-Wiki, normalerweise abgekürzt mit  Meta,ist ein Wiki in dem Probleme diskutiert werden, die alle Wikimedia Projekte betreffen. Siehe auch: About.
 * "Meta" darf man nicht mit MetaWiki verwechseln, diese Suchmaschiene hat nichts mit der Wikimedia Foundation zu tun.

Wikipedia
Wikipedia is a Wikimedia project that is a global, free and multilingual internet encyclopedia. It is the oldest, and largest, Wikimedia project, predating the Wikimedia Foundation itself. Wikipedia is a wiki that runs on MediaWiki.

MediaWiki
MediaWiki is a particular wiki engine, that is developed for and used by Wikipedia and the other Wikimedia projects. MediaWiki is freely available for others to use (and improve), and it is in use by all sorts of projects around the world.

Siehe auch How does MediaWiki work?, Sites using MediaWiki, How to become a MediaWiki hacker.

Videos

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