A Perl based lightweight application controller framework which uses XML to store individual application's configuration, functionality, behaviour and messaging, and uses XSLT to transform XML data structures into vanilla web management interfaces
XTemplate is a template engine for PHP that allows you to store your HTML code separately to your PHP code. It has many useful features yet code is short and highly optimized. The code is stored here but eveything else is on http://www.phpxtemplate.org/
Sort taglib is a taglib that let you sort a collection by any properties in ascending or descending order. You could also sort on several columns. For example, in your store cart, you could let the user to sort by price or artile name or whatever.