This is exactly what I (and others it seems) were looking for: all the features of the excellent ZynAddSubFX, but in a much more JACK-friendly package. Many thanks to the developers.
I use Yoshimi in my MIDI synth own-built for live use; there's nothing which does everything it does, including its reliability and ability to run multiple Yoshimis with different patches simultaneously!
Fantastic, absolutely fantastic - especially the new mysterious banks...
This really solved a very annoying problem for me. Thanks developers! Where can I send some $?
This project is the best that could happen to Zynaddsubfx. Works like a charm with jack or alsa midi or audio. The anonymous poster about missing 'support' of vmpk or lmms should execute yoshimi -h to learn how to use it before giving false recommendations