MadMapper - The Mapping Software
Serum - VST for FL Studio, Ableton Live, and many other VST supported DAWs. Heavily utilized in EDM.
Resolume - Resolume is an application for live video performances.
Korg Legacy Collection - Korg Legacy Collection is a suite of VST instruments that acts as an audio plugin software for integrating synthesizers and effects units into your digital audio workstation.
Linux Show Player - Sound player designed for stage productions
SynthMaster One - Powerful, universal wavetable synth with an intuitive workflow.