Larry Taylor has release AudioUnitInfo a free utility that lists all installed audio unit plug-ins and displays information about each one.
Installed audio units are displayed in alphabetical order by name. You can press a button for additional information (Conf Info for the configuration information, or State for the state information), or press the Validate button to run the default validation tests on the audio unit.
Pricing and Availability:
Massive sonic experience from Alexander Hacke
Melbourne Instruments motorized synth update
Decapitator, SIE-Q, Radiator
And viewer questions