phpSearchDoc is a program that aims to do for PHP developers what Javadoc does for java developers. It is a script that parses PHP class definitions, extracting function and variable names, as well as comments, and dumping this data into a database. The script itself is built in Perl, but PHP is used for search and display. Search is powered by SearchForms, and display by EnzymeTemplates (both are GPL modules released as part of the Enzyme open-source project).
Chorus WebCMS allows the developer to specify subsections(or "blocks") of a page that will have to be changed frequently and adds Unix-style ownership and permissions for each block. It is intended to be incredibly flexible, allowing site administrators to tailor it to their own particular needs. Each page can have defined in it as many blocks as desired, and blocks can be nested.