H.G. Fortune specializes in specific synths able to produce all kind of ambient, texture, pad, space, fx sounds. Currently, three Pro versions of nearly forgotten gems are available as freeware: ProtoPlasm Pro, Shuniji Pro, and LaserBlade Pro.
If you don’t know what I’m talking about 🙂 then just take a look at below movie. (the sound comes from Altair synth – one from the synth available on H.G. Fortune)