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. The API can be used through either JACK1 or JACK2.
JACK Audio Connection Kit vs Soundflower opinions
jack is much too complicated. soundflower was so simple, just so buggy. how has nobody made a good copy of it yet...
JACK Audio is much more complicated and requires actually starting up the server for routing to take effect but it fundamentally addresses the same issue of routing which Soundflower does.
jack audio doesn't seem to stream screen sharing audio
Create virtual audio devices to take the sound from applications and audio input devices, then send it to audio processing applications. Loopback is a software solution that provides the power of a high-end studio mixing board.
Loopback vs Soundflower opinions
Compatible with current macOS. Easy guide to setup and route computer audio for recording. Generous freemium usage before limits hit.
VB-Audio CABLE is a Windows Audio Driver working as a Virtual Audio Cable. After installing the VB-CABLE driver, a new playback device appears in the audio device list and can be set as default device. VB-CABLE can be set as the default device, just like any regular audio device.
VB-Audio Virtual Cable vs Soundflower opinions
BlackHole is a modern macOS virtual audio driver that allows applications to pass audio to other applications with zero additional latency.
BlackHole Audio Loopback Driver vs Soundflower opinions
It is basically the same thing as Soundflower, but it works for Catalina. Nothing new to learn.
Blackhole takes off where Soundflower left off and supports modern macOS. Development is live and active.
Sound Siphon is a software package that makes your Mac’s audio output available as an audio input device. It enables you to send audio from one application to another where it can be processed, streamed, or recorded.
Sound Siphon vs Soundflower opinions
SoundDesk is the easiest way to turn your macOS into a professional mixing desk.