Synthesis Technology has released the cross-platform Wavetable-Editor WaveEdit for free.
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.
Check out the three short videos below to get an idea what the program can do.