Ok, thanks! i tought you used some opensource API or that you bought one, but developed in-house... wow! That actually sounds like A LOT of work, because then i would have to know perfectly the windows API and the mac API... You guys should sell your multiplatform API hehehe sounds you could earn so...

C++? how hard is to develop windows and mac versions at the same time? is the code very different between platforms? what compilers do you use? And also, what graphics and interface libraries do you use for the GUI? because the application's GUI is, for lack of a tech programmer term, SO PRETTY! sor...