For years I've missed a wiki so everyone could describe the new tools programmed, the servers where they are running, svn information, the internal rules of programming, how-tos, code samples, etc. The wiki might be used for the dozen of programmers in the company and the externals.
I've been using a pmwiki (easy install) and now I want a better approach.
What wiki do you use? What plug-ins? Do you think there are better systems than wiki for this?