Apps similar to Vienna Ensemble Pro include Carla, which is free and open source. Other options are AudioBus, Rack Performer, Blue Cat's PatchWork and Gig Performer. In total there are five Audio Routers like Vienna Ensemble Pro for Windows, Mac, Linux, iPhone and iPad.
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.
United Kingdom
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...
France
EU
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.
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.
United States
