Software by nerds.de

LoopBeAudio is a virtual audio device to transfer audio between computer programs, digitally, without any quality loss. Build a virtual 7.1 surround device, even though you don't have the built-in hardware. Configure up to 24 audio channels.

LoopBe30 is a virtual MIDI device driver for transferring MIDI data between computer programs. Basically LoopBe30 provides up to 30 independent invisible cables to connect MIDI outports of applications to any other application's MIDI inport.

ipMIDI - A MIDI over Ethernet Driver. No more MIDI interfaces needed to communicate between applications on different PC's. It has a even lower latency than a hardware legacy device and sends over Multicast. No client server hassle, no configuration.