The kdewebdev package is the web development package for the K Desktop Environment.

It contains Quanta Plus and other applications, which are useful for web
development. They are runtime dependencies of Quanta Plus, and it is
highly recommended that you install them.

The extra applications are:

Kommander: a GUI script builder and executor tool. Needed for some Quanta
   functionality.
KFileReplace: powerful search and replace in multiple files
KXSLDbg: XSL debugger
KImageMapEditor: image map editor
KLinkStatus: link checker