Odo Synths has released 38911 Bytes, a new synthesizer based on Commodore 64 software (but it can do a lot more).

Features:

• 1 oscillator synth with 4 waveforms (saw, triangle, pulse and pitch noise). Also PulseWidth "noise cutoff" and "noise level" and Octaves from -3 to 4.
• 3 BPM sequencers with 7 rates, 2 to 8 steps and end/loop modes.
  • Sequencer 1 is for notes and octaves. Notes from C to B and octaves -3 to 4.
  • Sequencer 2 is for waveforms Saw, Triangle, Pitched Noise, RM saw, RM triangle, RM pulse.
  • Sequencer 3 is for octaves from -3 to 4.
• The filter, pitch and PW modulation envelopes have stages from 1 to 8, also 13 curves, a Sustain point from 1 to 7 or even off. The envelopes can also be turned off to save some CPU when not required.
• 3 different filters - low-pass, band-pass and hi-pass. You can activate more than one filter type like on a real c64 and also turn the filters off.
• 2 LFOs with 19 different waveforms with free speed or 14 BPM speeds. The LFOs have only 3 destinations - cutoff, pitch and for PWM.
• A Ring modulation with a bitcrusher notes from c to b and octaves from -4 to 3.
• A volume envelope and a full bank of 128 presets.

38911 Bytes is available as a VST instrument plug-in for Windows and it is (almost) free, although if you want to move any of the knobs you'll have to make a donation.