WikiProject is a collection of open source tools to manage media-wiki projects. WikiBrowse, WikiResearch and WikiSearch are currently available tools under the WikiProject.
Compared to other wikis, it has an excellent range of features and support for high-traffic websites using multiple servers (Wikimedia sites peak in the 50000+ requests per second range as of January 2008).
WikidPad is a Wiki-like notebook to save your thoughts, to-do lists, contacts, etc. It is a standalone application, and not a web-server. Features used in programming IDE like auto-complete, outline...
Jason Horman, Michael Butscher, Gerhard Reitmayr
Wikipedia Quick Hints simple Google Chrome extension that makes reading Wikipedia articles more convenient. Getting definitions of unknown terms is made simple by this addon;
Wikitool allows you to search for articles on the popular Wikipedia online encyclopedia website without using a web browser. Wikitool features an intuitive multilingual interface that comprises navigation options to make things even more easier.