I've enjoyed wiki software since Ward Cunningham created c2. I do full-stack MediaWiki development, DevOps, container and cloud deployments and 3rd-party MediaWiki.
Here is an audio of the presentation I gave about MediaWiki (Boston PHP Meetup, January 2009 at Optaros) http://www.archive.org/details/collaboration.at.wiki.speed-audio-part1 My wiki is at http://freephile.org/wiki/