Cantabile - Plugin host for live performance.
Mixxx - The most powerful free DJ software in the world.
Gig Performer - Gig Performer is a cross-platform audio plugin host for live music performances
Guitarix - Guitarix is a simple Linux Rock Guitar Amplifier for https://alternativeto.
Blue Cat's PatchWork - Blue Cat's PatchWork is a universal plug-ins patchbay and multi FX that can host up to 64 VST, VST3, Audio Unit or built-in plug-ins into any Digital Audio Workstation (DAW) in a single instance, with both serial and parallel routing options.
VirtualDJ - Virtual DJ Software - MP3 and Video mix software for DJs