Voicemeeter Banana!

Soundflower is a Mac OS X system extension that allows applications to pass audio to other applications. Soundflower is easy to use, it simply presents itself as an audio device, allowing any audio application to send and receive audio with no other support needed. Soundflower is free, open-source, and runs on Mac Intel and PPC computers.

JACK is a professional sound server daemon that provides real-time, low latency connections for both audio and MIDI data between applications that implement its API.

With Audiobus, the revolutionary new inter-app audio routing system, you can connect your Audiobus-compatible music apps together, just like virtual cables.

Dante Via can intercept the audio from your professional audio applications and makes those application's inputs and outputs available to the Dante network. You can use two copies of Dante Via to interconnect two ordinary PCs or Macs and share audio between them. Or you can interface your audio apps with professional Dante audio gear, over the network. Dante via can also expose your computers audio inputs and outputs to the Dante network.

Dante Virtual Soundcard turns your computer into a Dante-powered workstation, seamlessly integrating your PC or Mac with Dante audio devices on your network. Since Dante doesn't require any special network hardware, all you need is a common ethernet interface.Dante Virtual Soundcard creates virtual (ASIO and MME on Windows, CoreAudio on Mac) soundcards on your system, that can be routed in your Dante network. If there is no dante hardware or Dante VIA in your network, DVS can't be used between 2 computers, this is because DVS can't be the clock master of a Dante network. »