ProXL say: "Commercial products require good support. It has become simply too difficult for me to keep up with all Operating System changes, 64 bit support, support questions etc. So have fun with these free plugins!"
ProbaGate is a "trancegate" effect plug-in with a "probability" parameter per step allowing your gated patterns to sound less static. A low probability value means that the associated step is triggered only occasionally. Higher probability values will trigger the step more often.
VstNotesXL is a VST notepad. It loads as a VST Effect in your track, audio is simply passed through.