Carla is an audio plugin host, with support for many audio drivers and plugin formats. It has some nice features like automation of parameters via MIDI CC (and send output back as MIDI too) and full OSC control.


The best open source alternative to VB-Audio Virtual Cable is Carla. If that doesn't suit you, our users have ranked more than 25 alternatives to VB-Audio Virtual Cable and eight of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to VB-Audio Virtual Cable are JACK Audio Connection Kit, BlackHole Audio Loopback Driver, Soundflower and Synchronous Audio Router.
Carla is an audio plugin host, with support for many audio drivers and plugin formats. It has some nice features like automation of parameters via MIDI CC (and send output back as MIDI too) and full OSC control.


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.

Virtual Cable is very easy to use, and connects output to input and input to output. Jack is a difficult to use audio server. See the differences? They can't be compared.
This is for pro audio and for people that care. VB-Audio is a product that is shilled by trolls and who knows what or how they're spying on your system. JACK has been around for over a decade or more--trusted and reliable.


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

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.

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.

An OBS plugin that allows capture of independent application audio streams on Windows, in a similar fashion to OBS's game capture and Discord's application streaming. This eliminates the need for third-party software or hardware audio mixing tools that introduce...


virtual-audio-capture-grabber-device is an audio capture device allowing you to capture all the "wave out sound" that is playing on your speakers (i.e. record what you hear) for Windows 7/Vista.
VB-audio simply connects audio streams between devices. JACK is a virtual audio server and requires other unrelated programs and additional expertise to have the same functionality, if it is even possible.