MeatballWiki
Interested in online communities, culture, hypermedia. Topics range from intellectual property to cyberpunk to uniform resource identifiers; and a good reference on wiki technology.
Portland Pattern Repository / Wiki Wiki Web
The original wiki, created by Ward Cunningham in 1995, from which all other wikis are descended. Discusses a wide range of software-related topics, such as pattern languages and Extreme Programming.
Socialtext
Offers an Enterprise Wiki as a hosted service or installed on a hardware appliance.
Weblog Kitchen
The Weblog Kitchen explores current research in weblogs, wikis, and other hypertext systems.
Wiki Wiki Web FAQ
Frequently asked questions about Wikis, how they work, and a history of them.
