Free: Caveman Cosmonaut
A totally anachronistic synthesizer made from samples of a Unitra B 11 transistor organ made in Poland in 1983. Unlike most transistor organs which just have drawbars, this one also has buttons for additional "lead" and "tremolo" waveforms, which are somewhat buzzy and annoying in an organ, but they make great raw material for an old-school synth. Thanks to a very unorganlike set of controls, Caveman Cosmonaut does everything from simple organ sounds to subtractive monosynth leads, complex evolving drones, sci-fi wibbles, and pads perfect for today's 80s music. 370 samples, 93 MB download. All samples are included as WAV files so they can be reused in other samplers or whatever you want. Requires Plogue Sforzando 1.967 or newer.