Used Glider Listings

• Wings&Wheels
• DE.classifieds
• DG Market
• Glider Pilot

Soaring Supplies

• Knauff & Grove Supplies
• Wings&Wheels
• Bob Wanders Soaring Books
• Cumulus Soaring , Inc.
• Soaring Society of America

US Organizations

• Soaring Society of America
• Sailplane Racing Assn. (US)
• AOPA
• EAA

International Organizations

• British Gliding Association
• European Gliding Union
• Gliding Federation of Australia
• ICAO
• LBA
• Soaring Association of Canada
• Soaring Society of South Africa
• Internationale (FAI)

Magazines

• Aerokurier
• FAI Airsports Magazine
• Free Flight
• Glidingmagazine.com
• Sailplane & Gliding
• Avianet (dutch)
• Volo a Vela (Italian magazine)

Glider Winches

• Electric-startwinch
• Hydrostart
• Skylaunch
• Supacat
• Tost
• Van Gelder

Soaring Software

• CAL
• CEGlide
• EW View
• Flightmap
• FlightPro
• flyWithCE
• GCCS
• Glide Navigator II
• LogStar
• Ltb-office
• Opti
• Pocket-NAV
• StrePla
• Taskfinder
• TaskNAV
• WinPilot

Free Soaring Software

• CouTraCi
• GPLIGC (for Linux/Unix)
• Gps_Log
• JScore (scoring software)
• KFLog
• MyGPS
• SoaringPilot - Soaring Computer
• SSA programs
• TrackAlyzer
• Xcpas
• XCSoar

Glider Manufacturers

• AE-1 Silent
• Alexander-Schleicher EU
• Antares-Elektrosegler
• Apis Gliders
• DG-Flugzeugbau
• Diana 2 (SZD-56)
• Eta-aircraft
• Glasflugel 304C and 304CZ
• Jonkersailplanes
• LAK-Sportine Aviacija
• LET a.s. (Blanik)
• LS-Flugzeugbau
• PW-5 Smyk
• PZL-Austria
• Scheibe-Flugzeugbau
• Schempp-Hirth
• Stemme
• Super Ximango USA
• Test ultralight gliders

Glider Instruments

• Ball Variometers
• Becker Avionics
• Bohli
• Borgelt Instruments
• Cambridge
• Dittel
• EASY MatchBox
• EW Avionics
• Filser
• Holltronic
• Ilec GmbH
• Microair Radios
• Peschges
• PZL
• Sage Variometers
• SDI Variometer
• Tasman Instruments
• Volkslogger
• Westerboer
• Winter
• Zander

US Glider Clubs

• SSA Locations: Soaring and Gliding
• Associated Glider Clubs of Southern California
• Bay Area Soaring Associates
• Blue Ridge Soaring Society
• Colorado Soaring Sites 
• Crazy Creek  
• Invermere Soaring Centre  
• Memphis Soaring Society  
• Miami Gliders - Florida
• MGSA - Mid Georgia Soaring
• Minnesota Soaring Club
• North Carolina Soaring  
• Orange County SA  
• Philadelphia Glider Council
• Piedmont Soaring
• Post Mills Soaring Club  
• Seminole Lake Gliderport
• Sugarbush Soaring
• Tucson Soaring Club
• Tidewater Soaring Society
• landings.com

International Glider Clubs

• Argentina
• Australia
• Austria
• Belgium
• Brazil
• Canada
• Chile
• Czech-Republic
• Denmark
• Estonia 
• Finland
• France
• Germany
• Hungary
• Iceland
• Israel
• Italy
• Japan
• Lithuania
• Netherlands
• New-Zealand
• Norway
• Poland
• Slovak
• South-Africa
• Spain
• Sweden
• United-Kingdom