Lexicographer is a WordPress plugin I’ve written. It creates an alphabetical index of your blog, using keywords you specify. The index can be included in any page or post.
I wrote Lexicographer because I like to invent words and define them on my blog, thereby creating a dictionary distributed over several posts. Not only was there no list of all the words available, it was also that Google wouldn’t find the words because it couldn’t deal with the stress marks I put in there, dictionary-style. Lexicographer solves both of these problems.
Watch Lexicographer in action (on German words): Wörterverzeichnis.
Lexicographer is available at the WordPress Plugin Directory.
Does WordPress offer a plugin for versioning comments, similar to a Wiki? This would be great for a project idea I have in mind, which would be a hybrid of a Blog and a Wiki, yet not needing the power of standard blown-up Wiki system.
Not that I know of, the place to look for it would be http://wordpress.org/extend/plugins/ . Your idea sounds interesting, how would the hybrid use versioning of comments?