retro boy

Retro Boy is a virtual analog chiptune synth/emulator. Chiptune or otherwise known as 8-bit music is music or sounds synthesized by the sound chip of computers, video game systems, and most handled gaming systems. Retro Boy features a single oscillator that has seven waveshapes: 12.5% pulse, 25% pulse, %50 pulse, saw, triangle, sine, and noise.

http://www.sbaudio.org/retro-boy