PXDK is an object-oriented system, using C++. Yes, this means you can produce Cocoa plug-ins on 64-bit OSX, without even reading 1 single line of Obj-C. This is the power of PXDK. Instead of using your energy on ever-changing APIs, you can focus on the value which the end-user can appreciate: The content.
PXDK is available for VST 2.4, VST 3, AU, RTAS and TDM, Windows and OSX, 32- and 64-bit, Carbon and Cocoa. And for every single one of those platforms, your code is the same (although, for TDM you would obviously need to write extra DSP code).
For further information, please contact us.