Generalized Music Plug-in Interface

Generalized Music Plug-in Interface (GMPI) is a working group of the MIDI Manufacturers Association set up to consider the feasibility of a standard interface for audio and MIDI software plug-ins, to complement or supersede existing vendor-specific interfaces such as Audio Units. The GMPI group started work in 2003 and published a requirements draft in April 2005.

Jeff McClintock developed an implementation of GMPI for Microsoft Windows and macOS, which is available on Github.