WakkaWiki
by Volker Weber
Wakka is a server-side application written in PHP that allows you to build and maintain collaborative websites. At its core, it's what people call a Wiki engine -- an application that poweres a website with features similar to the original Wiki site. Wakka can also be used as a high-level site building framework, if you're willing to learn about WakkaPlugins.
Wakka is not a content management system. While CMS-like applications can be built upon Wakka as a base, Wakka's real strength is simplicity.
WakkaWikki is written by Hendrik Mans, Wiesbaden, Germany and currently is a 23k download. It is free to use and you can host it on any ISP that supports PHP and MySQL. As I found out on Hendrik's weblog you can also spend hundreds of Euros a year to have somebody else do something very similar for you. If you don't like free stuff, that is.
[via Haiko Hebig]
