KikAXXE is now available for download! It supports RTAS, AU Instrument, AU Effect, VST Instrument, and VST Effect plug-in and standalone application for Mac OSX (PPC and Intel), and RTAS, VST Instrument, and VST Effect for Windows (XP or Vista).
The latest version is 1.1 and includes MIDI out for both the step sequencer and drum sequencer under VST and RTAS. Also, MIDI mapping of controllers has been re-worked to support multiple layers of mappings. This enables you to have a 'base' map and then load session or patch specific mappings on top without loosing your basic settings.