Kruud VSTI is a synthesizer with a drawable low resolution Oscillator.
1 LFO/SUB OSC
2 Delays of which one can be used to make crude physical modelling.
A multimode filter
The main Osc has 5 basic waveforms , Pink and white Noise and a drawable user waveform.
The waveforms have different modes like Phase Mod, PWM (Square only) and a special morph mode (listed as PWM in the synth) for all but the square wave.
The user waveform can mix or morph between two waveforms.
Freeware by Xenobioz