A plugin wrapper attached to the selected VST plugin that extends the plugin with MIDI capabilities VST MIDI Control Extension (MCX) is a plugin wrapper attached to the selected VST plugin that extends the plugin with MIDI controlling capabilities.
VST MIDI Control Extension allows you to assign each parameter of the VST plugin to a
midi controller (CC0 - CC127). It works with both VST and VSTi plugins.
On VST hosts without or with bad MIDI controlling setup, you will be able to control your virtual devices from your
midi controller very easily.
VST MIDI Control Extension is nice and configurable tool - by one-click Learn function and moving the requested knob on your device. The extension configuration is saved with the attached plugin's preset data.
Here are some key features of "VST MIDI Control Extension":
supports VST/VSTi plugins (waveshell plugins and plugins without GUI currently not supported)
parameter assignment using MIDI Learn button
configuration panel for plugin selection
1 MIDI CC assignment for each parameter of the extended plugin
independent configuration of each plugin instance saving with the instance's preset data
MIDI Thru option
Requirements:
Pentium II or higher processor (or any compatible)
2MB disk space
VST 2.3 compatible host and plugins
Microsoft Windows Installer
MP4 Converter
1.55 MB 
$ 59.5