Federation for Sport at Altitude Covers high-altitude sports such as skyrunning, skyski, skybike and sky raid. Site contains a calendar of upcoming events, related links, news items and membership details. http://www.fsa-sky.org/

Extreme Bros Features BMX, climbing, skateboarding, snowboarding, surfing and wakeboarding. Includes news, events, forums, photos, videos, tricks and tips. http://www.extremebros.com/

EXPN.com Online version of ESPN's action sports network covering skateboarding, snowboarding, surfing, inline skating, BMX, MotoX, and X Games. Includes photos, events, tricks and tips, athlete columns, biographies, videos, and contests. http://expn.go.com/

Street Active Free 'Learn to Ride' clinics in skateboard, BMX, inline speed skating and inline hockey by accredited coaches. http://www.streetactive.org/

Ekstremsportveko Norwegian extreme sports week involving base jumping, skydiving, paragliding, rafting, kayak, climbing, and mountainbike. Includes photos, results, videos, and sign up information. http://www.ekstremsportveko.com/

Kiiking A new sport-art from Estonia. Features history, events, mission, photo gallery and services. http://www.kiiking.ee/

Point X Camp An action sports camp for kids located in Southern California and specializing in skateboarding, BMX, inline and motocross. Includes camp summary, dates, location, contact information, fees, application, equipment requirements, and image gallery. http://www.pointx.com

Adventure Sports Covers activities such as mountain biking, surfing, rock climbing, sailing, snowboarding, and surfing. http://www.suite101.com/welcome.cfm/adventure_sports/

She Shreds Global community for extreme women athletes of all ages and abilities. http://www.sheshreds.com/

Camp Woodward Features tips and tricks for inline skating, skateboarding, and freestyle BMX racing. http://www.woodwardcamp.com/

Ripboard Features photos, video clips, general information, and equipment of riverboarding whitewater at face level. http://www.ripboard.com/

Grindco Specializes in all aspects of extreme sports entertainment; from conception, to marketing, to onsite production and operations. Specializes in skateboarding, snowboarding, ski jumping, BMX, motor scootercross, and personal watercraft racing. http://www.grindco.net

Air Above Water About worldwide cliff jumping. Includes photos, jumpers profiles, and directions to each jump site. http://www.airabovewater.com

15 Minutes of Fame Fundraising with interactive DVD yearbooks. Includes sample layouts, profit calculations, testimonials and video gallery. http://www.15online.com