Qsynth - Qsynth is a simple Qt4 application wrapper for the ...
Omnisphere - Piano, pad and synth VST for DAW's.
FluidSynth - FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications and has...
Serum - VST for FL Studio, Ableton Live, and many other VST supported DAWs. Heavily utilized in EDM.
WhySynth - WhySynth is a versatile softsynth which operates as a plugin for the
SynthMaster One - Powerful, universal wavetable synth with an intuitive workflow.