Wikis and others

1. The must-read in Wiki comparison [ http://en.wikipedia.org/wiki/Comparison_of_wiki_software ] and its companion [ http://www.onlamp.com/pub/a/onlamp/2004/11/04/which_wiki.html ].
2. PMWiki [ http://www.pmwiki.org/ ] is a simple to use Wiki that needs no root access to install, has no database backend dependencies (e.g., no MySQL)... just what one needs for a simple web site.
3. A site with a great selection of PHP-based scripts: http://php.developpez.com/scripts/ .