The VCOb by BubblesoundInstruments is a classic analog oscillator with four waveforms. Rectangle with PWM and saw tooth convince with real Vintage charm. Sine and triangle are pure and complement the sound palette with elementary waveforms.
The frequency setting range is wide, making it ideal for linear or exponential FM with stable tracking. It VCOb also has a hardsync input as well as inputs and controls for pulse width modulation.