The awesomeness of having a desktop wiki cannot be overstated: the mess of text files that used to be my braindump is now a tidy, searchable MoinMoin-style wiki. Linking and categorizing is really nice too.
I've been managing an installation of Mediawiki at work, getting ready to maybe use it as a corporate wiki. After playing around with MoinMoin, though, I'm rather sure that I will be scrapping that and putting a MoinMoin in its place.
- MoinMoin markup seems a lot easier to me. Especially linking is more fun. You are encouraged to name pages in MoinMoin in CamelCase, and words like that are automatically converted into links. At first this is slightly strange, but after you get used to it, it's actually really sweet. If that ain't your thing you can link pages with "normal" markup, too, of course. Also, tables are easier to make.
- MoinMoin has a wysiwyg editor built in, ajax style. One of the problems I would have had with introducing MediaWiki at work would have been the markup: my coworkers are not very technical, and it would have been hard to get them to swallow something as abstract as a markup language. The builtin wysiwyg thing in MoinMoin crosses that bridge for me.
- It's Python! While that doesn't actually mean anything to most people, I'm a fool for anything written in Python.
- Apparently, MoinMoin has full support for nicely grainy access control; I hadn't been able to get that kind of thing working under mediawiki, although maybe I didn't look hard enough (I looked reasonably hard).