YCP syntax highlighting for kate
Most people see YaST  as an application used for configuring the operating system. Relatively few people know that it is a development platform with its own language, libraries, and user interface abstraction layer that enables the developer to write a configuration module that will display using Qt when run in KDE, GTK when run in GNOME, ncurses when run on the command line. 
Although there are very nice features of the YaST platform, there are also disadvantages. YCP (The language most  YaST modules are written in is quite archaic in some respects, and there is limited library support. Also as YCP is only used by YaST there is little tool support for developing in it. In an effort to make developing in YCP a little easier for the remainder of its lifetime I wrote some kate-part (Used by kwrite,kate,kdevelop,konqueror etc) syntax highlighting rules for the YCP language. Screenshots: Here -> and here .
To use them simply save http://bw.uwcs.co.uk/kateycp/ycp.xml in ~/.kde/share/apps/katepart/syntax or `kde-config—prefix`/share/apps/katepart/syntax for all users.
It should be possible to create some kdevelop templates for YaST projects, and possibly even a tool for automatically generating the framework for common modules such as wizards.
 Yes modules can be written in Perl too, and now Ruby. At present the user interface components must be written using YCP though. Also I personally dislike Perl and Ruby more than YCP.