DotNetNuke SkinObjectsEx is a collection of extra Skin Objects which can be included in DotNetNuke skins. These provide simple ways to link javascript and css files, create page links and portal date/time values in a skin. The main use of the Script and Stylesheet skin objects is to provide a cross-DNN Version method of both easily including Javascript and CSS files from different locations, but also to allow your skin to leverage the Client Resource Management tools where available.
XsltDb is powerful XSLT module for DotnetNuke. It offers safe database access, AJAX support, Telerik controls usage visitor interactions, environment integration (dnn properties, request, cookie, session and form values), syntax highlighting, regular expressions, etc.