Multidb is a factory class that generates objects for use in php code. It allows faster reuse without having to redo code when porting to different databases. It wrapps common function calls like db_connect -- there is no need to change code when working with different database backends.
UNITED-NUKE is a secure and exceptionally fast content management system that is compatible with PHP-Nuke add-ons, including blocks, modules, and themes. It is up to ten times faster than PHP-Nuke, contains a new secured authorization scheme, SLUFU, an update system similar to MS Windows Update, an automatic DB update service, an extensible theme engine, and support for RSS 0.91, 0.92, 2.0, and Atom.