VL1 is a free software synthesizer developed by PolyValens. Available format(s): VST for Windows.
VL1 is a Casio VL-Tone emulation. It implements all functionality of the original calculator/mini-synthesizer from Casio, including song recording and calculator.
Features:
- Fully programmable.
- Five preset sounds and one user programmable sound.
- Synthesizer and rhythm are on two separate channels.
- Rhythm sounds can be controlled individually.
- Desktop calculator.
http://www.polyvalens.com/