I was trying to figure out how long we, here in ITS, have been using an internal wiki to document "things." After hunting around the old filesystems, I found one of the original installs of Kwiki dating back to July 20th, 2004. I came from Weatherhead to ITS in February of 2003, and I remember setting up the wiki fairly quickly between helping get the new Email system launched and redesigning our internal Identity Management system (I used the wiki to document the redesign). The July 2004 date didn't seem early enough.
The July 20th, 2004 number coincides closely with the Kwiki
.3x release according to Kwiki's changelog, but I remember using the
.1x version (when it was
CGI::Kwiki) for quite a while before leaping to the completely rewritten codebase of the
.3x series. There's no history of the
.1x versions on the Kwiki website or the Kwiki CPAN page.
The Wayback machine helped me nail it down to a closer date because I remember doing the upgrade from
.17 was released on June 10th, 2003 according to this wayback page.
.18 was released on September 10th, 2003 according to this wayback page.
So I'm going to estimate that the internal wiki was first in use circa July of 2003. Since that time, we've switched to DokuWiki.