Tapeotronic is a free software synthesizer developed by Elektrostudio. Available format(s): VST for Windows.
Tapeotronic is heavily inspired by Mellotron. It has three type of sounds you can blend together: Flute, String and Chorus. 16 patches, knobs with fully automation as well as MIDI learn option.
http://www.elektrostudio.ovh.org/index2.php