Artifake_Labs has released RedTron_400, a free sample-based VST instrument plug-in for Windows that emulates the "Mellotron M400".

Features:

• Realistic user interface.
• Six sound types: 3 Violins, 8-Voice Choir, Flute, Brass, String Section, Cello.
• "Loop" and "Non-Loop" modes: as the original "Mellotron", each sound is eight seconds long but you can switch to "Loop Mode" which allows the samples to loop continuously.
• Layer possibilities & independent parameters for layer A & B:
  • Volume, Tune, Reverb, Delay, Pan, Octave, Note, Cutoff, Resonance, Attack & Release parameters.
  • Delay effect (Amount, Time, Feedback & Pan parameters).
  • Reverb effect (Mix, Width, Size & Damp parameters).
• Global Volume control.
• Global Tone control.
• Global Pitch control.
• Can be used as SoundFont Player to mix any .sf2 file with "Tron sounds" or to extend the sound palette.