We are using QT from Trolltech, this is a C++-library and ressource-kit that works quite well in cooperation with the VisualStudio. You see, I also use VisualStudio - it is not completely useless, but if you deal with such filesizes and memory-demands like in 3d-programming, you may not use the VS-library classes, but have to write your own. And yes, it is our big advantage that there are no guys from a marketing or financial division who force us at pistol point, to give them something that they can sell tomorrow :-)) Sometimes such guys are necessary that we programmers find an end, but more often they are the reason that users become unpaid beta-testers.