To Ward and to Wikipedia's tech list,
On http://c2.com/cgi/wiki?WikiHistory it is claimed that this (c2.com) is the first Wiki website, founded in 1994, as a supplement to the Portland Pattern Repository. The next dates on the page say that RecentVisitors and PeopleIndex were added in 1994, NotSoRecentChanges in 1995, ThreadMode, ThreadModeConsideredHarmful, EditCopy and WikiCategories in 1996.
However, the Internet Archive's Wayback machine shows no sign of any Wiki in November 1996, when the c2.com website was first archived. The Portland Pattern Repository is there, but it consists of plain HTML files. The Wiki Wiki Web does show on the second archiving in December 1997. See http://web.archive.org/web/*/http://c2.com
So where was the Wiki hiding during 1994, 1995, and 1996?