Morphine

Morphine screenshots

It is an Additive Synthesizer that allows you to create any sound.
Main Window
Morphine 1.0 : Main Window

Alternative downloads

Vogue MK2 Synthesizer
1.8.6
Eight-voice standalone is a MIDI synthesizer with built-in effects.
FM Synthesizer
1.0
FREE
Enjoy creating sounds as well as playing music on your Mac.
monstrumWaveXT
2.963
Editor for the Waldorf Microwave II/XT/XTk synthesizer.