FluidSynth FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications and has reached widespread distribution. Free Open Source Mac Windows Linux BSD Synthesizer Add a feature 6 Like
ZynAddSubFX ZynAddSubFX is a fully featured open source software synthesizer capable of making a countless number of instruments, from some common heard from expensive hardware to... Freemium $ $ $ Open Source Mac Windows Linux BSD Growl integration Synthesizer Add a feature 14 Like
WhySynth WhySynth is a versatile softsynth which operates as a plugin for the DSSI Soft Synth Interface. A brief list of features: - 4 oscillators, 2 filters, 3 LFOs, and 5... Free Open Source Linux DSSI Music Composer Add a feature 1 Like