This isn't really a review, but I don't have a better category. See also: musings about the usage of wiki engines.
Things I still like about PmWiki:
- ease of making new skins — there's nothing quite like it;
- it literally ships with twice as much documentation as code;
- the feeling that every little detail is configurable and hackable.
Things I rediscovered in the mean time:
- small, frequent updates that never seem to break anything;
- the codebase sometimes shrinks instead of growing.
Things that aren't as fun:
- it's stuck with some pretty bad defaults;
- they have to be changed by hand in the config file;
- some defaults can't be changed later anymore if you forget.
Also, the generated HTML output is ugly and relies on hacks.
This wiki has 37 pages.