These samples are public domain, CC0, WTFPL, whatever hehe.

Amsynth: http://amsynthe.sourceforge.net/amSynth/
Bristol synthesizer: http://sourceforge.net/projects/bristol/
Phasex: http://www.sysex.net/phasex/

I had problems with Bristol because sound output is very low depending on the synth used, and distortion occured if I amplified gain too much (which was necessary anyway).

~Cacatoes
