Content Editing Scripts??

This is probably the most diverse type of script there is, ranging from a simple online WYSIWYG editor to a database driven CMS to full fledged "portal" scripts.

What you should use depends on what the purpose is.

Below is a site where you can test the admin and front end panels of any open source CMS system that runs on PHP and MySQL:

http://opensourcecms.com/

Movable type (perl) is a fantastic tool for making a CMS BTW.

Thanks