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.

Soundflower is described as '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' and is a Audio Router in the audio & music category. There are more than 10 alternatives to Soundflower for a variety of platforms, including Mac, Windows, Linux, iPhone and BSD apps. The best Soundflower alternative is JACK Audio Connection Kit, which is both free and Open Source. Other great apps like Soundflower are VB-Audio VoiceMeeter, Loopback, BlackHole Audio Loopback Driver and VB-Audio Virtual Cable.
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.

Voicemeeter is Audio Mixer Application endowed with Virtual Audio Device used as Virtual I/O to mix and manage any audio sources from or to any audio devices or applications.




Configure advanced audio routing by creating virtual devices on macOS, supporting up to 64 input/output channels. Customize and mix audio from multiple sources, including hidden ones like Siri. It offers Pass-Thru for direct sound transfers and full accessibility via VoiceOver, ideal for audio processing.




BlackHole is a modern macOS virtual audio driver that allows applications to pass audio to other applications with zero additional latency.

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.


Virtual Audio Cable is the definitive audio routing tool for Windows that lets you redirect audio streams between applications and devices on your computer. It enables you to do things like record your speaker output, send an audio stream from a DAW software to a video editor or...


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.



Synchronous Audio Router is a software-based audio routing driver for Windows. You can create any number of Windows audio endpoints, either playback or recording, and route them using any digital audio workstation software which supports ASIO, all with low latency.

SoundDesk is the easiest way to turn your macOS into a professional mixing desk.




The SoundDesk Virtual Devices are connectors that you can use to route audio across apps.




Audio routing software seamlessly connects applications to the Dante network, transforming PC and Mac inputs and outputs into sharable network resources, enabling integration with professional Dante gear and inter-device audio sharing through Dante audio over IP solutions.



MIXLINE is an audio mixing software that performs audio routing, mixing, and streaming. All bundled into a beautiful User Interface!.



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.