Michael Kraft has released the first version of Plug-In Constructor, a new flexible modular design environment that enables you to create VST Plug-in audio-effects in a fast, easy and intuitive way. The modular concept enables you to build any type of sound-device and then export the result as a VST effect.
Plug-In Designer, a free extension which will allow to design plug-ins with a graphical interface instead of the standard VST interface will be available soon.
Plug-In Constructor costs €45 and a demo version is available. Creation of virtual instruments will become possible with the next release.