DLL – Dynamically-linked library for Windows development supports C, Visual C++, C++ Builder, C#, Visual Basic, Python and more.ActiveX – ActiveX COM for Windows development supports C#, Visual C++, C++ Builder, Delphi, Visual Basic, PHP, Python, Java, PowerBASIC and more.The SDK is sold on a per platform basis, so if you purchase the Windows version then you have access to all the different editions for Windows and if you purchase the Mac version then you have access to all of the different editions for Mac. Several different editions are available to make development easier in a variety of different programming languages.
