Solcito Música has released a stand-alone version of BabyTron for Windows.
BabyTron is a free Analog and Phase-Distortion virtual synthesizer with Step Sequencer. It is the younger brother of Supertron, with some important differences. It can be used to generate arpeggiated sounds, analog strings, bass, leads, pads and some acoustic emulations.
Now you can use Babytron without a DAW or a host. It uses the same sound banks as its VSTi brother.