this was created for making wavetables for the synthesis technology oscillators but it's wav in wav out so you can make waveforms for anything really.
http://synthtech.com/waveedit/WaveEdit is a free tool on PC/Mac/Linux that allows powerful creation and editing of wavetables for the E352 and E370 VCOs. Using standard WAV formats, the editor includes a full toolbox of shortcuts. An audio Preview is available to audition the waves before loading into the module.
