A major draw for the Producer Edition was the upgrade to FL SynthMaker 2 . This version allowed users to export their custom-built instruments as VST plugins for use in other programs, turning FL Studio into a tool for building independent software.
It did not have Harmor (came in FL 10.5) or Gross Beat (came in FL 11). But 10.0.9 had Fruity Granulizer , which nobody understood then but is now considered a "lost artifact." fl studio 10.0.9 producer edition final