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.

Comments about JACK Audio Connection Kit as an Alternative to Virtual Audio Cable
It does only support jack compatible applications, not virtual audio applications.


Most users think JACK Audio Connection Kit is a great Virtual Audio Cable alternative.
JACK Audio Connection Kit is the most popular Linux alternative to Virtual Audio Cable.
JACK Audio Connection Kit is the most popular Open Source alternative to Virtual Audio Cable.
- JACK Audio Connection Kit is Free and Open Source




While JACK Audio involves a more complex setup and needs the server to be started to work, it's functionally the same as it allows audio routing between applications. Routing can be done between any app providing an option to select the JACK Audio driver.