It is also built on top of JSword, the free Bible study software, and looks like this (running on Ubuntu Linux, in this case):
Even better, the source code is available too, so there's a lot you could learn from it if you're developing on top of the NetBeans Platform yourself. Once downloaded, just open the suite and there it is, a fantastic sample application on top of the NetBeans Platform:
So... that's a free, mature sample of an application on top of the NetBeans Platform! Hurray for Tonny Kohar and everyone else at Kiyut. Especially if you're developing a similar application, these learning resources are worth their price in gold. (Oops, their price is zero, so... hmmm.) Of course, since the application is pluggable, you could extend it by creating new NetBeans modules for it. Finally, why is it called "Alkitab", you ask? If you'd studied (or if you are) Arabic a bit (as I have), you'd know that "Al Kitab" is the phonetic Arabic for... "the book"!