There are new ones popping up everyday so its hard to tell how many scooter companies there are selling in the US at this point but we did a quick count and we got:
There are at least 55 offshore OEMs selling scooters in the U.S. through about a hundred distributors. KYMCO, CMSI, TGB, Schwinn and Genuine Scooter Co. maintain good reputations so far, and Roketa, Baja Motorsports, Vento, Tank and United Motors seem to be popular with consumers. As the market consolidates, smaller distributors become dealers for the larger distributors. There are still several distributors whose core business is outside the traditional powersports industry — such as auto sales.