The interface (SDK) was developed from Steinberg. VST Basics VSTs are Plugins that are be able to load in Music Hosts like Cubase or FL-Studio. With 'Work of C.Hackl' and later 'Mainstream Audio' i developed a lot Plugins and Tools, so i may say, i know what i'm talking.
It seems that users are a bit confused about the usage of VSTs so i'll explain a little intro befor you PM me down ^^ First of all, i'm a developer of VSTs since nearly 3 jears. Got a lot of PMs at facebook about the same thing. I hope i'm not posting now something twice but i tried to seach such an artikle and did'nt find anything.