Loopback by RogueAmoeba - Get all the power of a high-end studio mixing board, right inside your Mac!
AudioBus - With Audiobus, the revolutionary new inter-app audio routing system, you can connect your...
Voicemeeter - Audio Processing and Audio Programming by V.Burel
JACK Audio Connection Kit - JACK Audio Connection Kit|Home
LiveTrax - LiveTrax is an app by MasterMedia Productions through which musicians can control the playback of their favorite track during live performances by using simple controls.
Soundflower - Soundflower is a Mac OS X system extension that allows applications to pass audio to other...