choose wiki software

Requirements for an official NetBSD wiki:

UI: pleasant web editing with preview and diff
appearance: customizable with CSS and templates
access control: publicly readable, editable by developers only, an area readable by developers only
web authentication: Kerberos
implementation language: not PHP
revision control: yes, preferably not something homegrown, even more preferably CVS
page rendering strategy: compiles static pages that can be mirrored

Before selecting ikiwiki, I evaluated the following:

Software	Language	Versioning	Comments
Sputnik	Lua	git or filesystem	looks cool
Foswiki	Perl	RCS	fork of TWiki, complex install docs, complex software, checkered security history
Kwiki	Perl	don't remember	old version was so-so, the ambitious rewrite never happened
MojoMojo	Perl	SQL	featureful
MoinMoin	Python	filesystem

In my opinion, ikiwiki is the best fit: written in Perl, with a simple web UI and several ways of restricting access, it not only renders arbitrary hierarchies of static pages, but also is designed to be used in concert with a variety of external revision control systems.