The term "WikiWiki_" ("wiki wiki" means "quick" in the Hawaiian language and
is pronounced "wickee wickee") can be used to identify either a
type of hypertext document or the software used to write it. 
Often called "wiki" for short, the collaborative software application
enables web documents to be authored collectively using a simple markup
scheme and without the content being reviewed prior to its acceptance.
The resulting collaborative hypertext document, also called either "wiki" 
or "WikiWikiWeb_," is typically produced by a community of users.

The original WikiWikiWeb_ was established in 1995 by Ward Cunningham, 
who invented and named the Wiki concept and produced the first
implementation of a WikiWiki_ server.  This server is still online
at http://www.c2.com/cgi/wiki.
Ward has written a book on the concept of wiki:
_The_Wiki_Way:_Quick_collaboration_on_the_Web_, Addison-Wesley Publishers,
ISBN-020171499X.
Some people maintain that only Ward's wiki should be called "Wiki"
(upper case) or the "WikiWikiWeb_".