AlioNoctis is a free virtual synthesizer VST instrument for Windows PC.
AlioNoctis combines many of the benefits from H. G. Fortune's ProtoPlasm, STS and Atonoise plug-ins with the ease of use many still love from the STS-21.
Sound-wise it goes beyond all the aforementioned plug-ins with vivid atmos, complex textures and pads but also some rhythmic sounds, all of which can be enriched by the out-of-this-world flavour of the Inferno, Spooks and Bass Enhancer features.