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.


Vienna Ensemble Pro is described as 'Has become the definitive cross-platform network solution in studios and production facilities around the world. This mixing and hosting application enables you to set up a multiple computer network with both Macs and PCs' and is a music production app in the audio & music category. There are five alternatives to Vienna Ensemble Pro for a variety of platforms, including Windows, Mac, Linux, iPhone and BSD apps. The best Vienna Ensemble Pro alternative is Carla, which is both free and Open Source. Other great apps like Vienna Ensemble Pro are AudioBus, Rack Performer, Gig Performer and Blue Cat's PatchWork.
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.


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




Rack Performer is a high-level modular environment hosting VST plugins and internal modules (over 100 and counting), with MIDI support, multi-channel audio I/O and internal processing, complete automatic patch-delay compensation, sample accurate sequencing, low jitter and...




Build and control your live music rig with Gig Performer to transform and elevate your live performing experience by gaining complete control over the sound of your instrument or voice.



Blue Cat's PatchWork is a universal plug-ins patchbay that can host up to 64 VST, VST3, Audio Unit or built-in plug-ins into any Digital Audio Workstation (DAW) in one instance.



