You can now use Instiki as a CMS with a password-protected back end 
that allows for edits and a read-only, published front end with no 
controls. Read all about how to set that up in HowToUseInstikiAsCMS[1]. 
I powering the Next Angle[2] site with this version.

Look forward to version 0.9: Bill Atkins is implementing color diffs[3].

More information and download links on www.instiki.org.

[1] http://www.instiki.org/show/HowToUseInstikiAsCMS
[2] http://www.nextangle.com/
[3] http://www.instiki.org/show/ColorDiffs
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David Heinemeier Hansson