Gescom
Beginning its activities in the early nineties, the shadowy Gescom (Gestalt Communications) collective has released material on Clear, Leaf, Chocolate Industries, SKAM, Warp, Worm Interface, and Source labels.
Incorrectly perceived as simply an Autechre side-project, Gescom in fact exists as a platform for a number of aligned artists to work in various different combinations, whilst remaining otherwise-anonymous.