Compare and contrast PostNuke, Xaraya, and TikiWiki
I am happy enough using PostNuke on 2 sites but periodically I like to review the situation. I've been following to some extent progress on Xaraya and more recently here for TikiWiki.
I'm happy enought installing, using, and comparing packages like this from a user/provider perspective but I'm not a programmer. If we can start by accepting that all are apparently functionally good in their own ways would anyone care to comment from a programmatic perspective on the relative merits/philosophies of these packages.