CLOU - A very small bicycle that can be folded in 2 seconds and can be pushed while folded. Contains pictures of usage, specifications, and folding instructions. Made in Austria.
Dahon - World's biggest manufacturer of folding bikes. Range from compact commuter bicycles, to full-size mountain bikes and touring bikes, in wheel sizes from 16" to 20" to 26"
Di Blasi - Italian manufacturer of folding scooters, bicycles and tricycles.
Dimension Edge - USA based manufacturer of motorized folding and portable bicycles and bike motors and engines.
S and S Machine - Bicycle Torque Coupling manufacturer to convert a bicycle frame to a folding frame.
Slingshot Bicycle Company - Manufactures mid-suspension mountain, road, hybrid and cyclo-cross bicycles that fold. Slingshot folding bikes are hand-made in the USA.