Motorcycle Manufacturers

Aprilia
BMW
Buell
Ducati
Harley-Davidson
Honda
Kawasaki
KTM
Moto Guzzi
Suzuki
Triumph
Yamaha

Motorcycle Media

Motorcycle.com
CycleWorld
Motorcycle Daily

Ride Planning

The Weather Channel
Mapquest
Rand McNally

Education

Motorcycle Safety Foundation

Universities

Brown
Columbia
Cornell
Dartmouth
Harvard
Penn
Princeton
Yale

General

American Motorcyclist Association