CLUBS
• Academy Of Model Aeronautics (AMA)
• British Association of Radios Control Modelers (BARC), England
• British Model flying Association, England
• Biggs BeNelux Holland
• CLWYD Soaring Association North Wales, UK
• DMFV Germany
• Harbor Soaring Society California
• IGG Germany
• IGG Switzerland
• Portland Sailplane Society
• Rodermark Modellsport Club Germany
• Soaring Association Of Australia
• Soar West Utah
• Torrey Pines Gulls California
• Wind Information @ Torrey Pines
• West Blackdown Model Gliding Club UK

ENGINES
• Amelung RC Modellbau Germany (ZDZ Engines.)
• Brisonaircraft Engines USA
• Cactus Avation USA
• Desert Aircraft (Engines and Menz props.)
• Jersey Modeler USA (Fueling tanks.)
• Horizon Hobby USA (Zenoa engines.)
• Macs Products USA (Mufflers & exhaust systems.)
• Reid's Quality Model Products USA (Fox & Zenoa engines.)
• Simon Modelltechnik Germany
• 3W Engines Germany
• RC Showcase Engines USA

FORUMS
• ISSA Forum USA
• Modellflug RC Network Germany
• RC Groups Scale Sailplanes
• RC Groups Argentian
• RC Groups Australia
• RC Groups Austria
• RC Groups Belgium
• RC Groups Brazil
• RC Groups Bulgaria
• RC Groups Canada
• RC Groups China
• RC Groups Czech Republic
• RC Groups Denmark
• RC Groups Finland
• RC Groups France
• RC Groups Germany
• RC Groups Hong Kong
• RC Groups Hungary
• RC Groups Greece
• RC Groups India
• RC Groups Israel
• RC Groups Italy
• RC Groups Japan
• RC Groups Korea
• RC Groups Malaysia
• RC Groups Mexico
• RC Groups Netherlands
• RC Groups New Zealand
• RC Groups Norway
• RC Groups Peru
• RC Groups Poland
• RC Groups Portugal
• RC Groups Russia
• RC Groups Singapore
• RC Groups South Africa
• RC Groups Spain
• RC Groups Sweden
• RC Groups Switzerland
• RC Groups Taiwan
• RC Groups Thailand
• RC Groups Turkey
• RC Groups United Kingdom
• RC Universe Sailplanes

FULL SIZE MANUFACTURERS
• Alexander Schleicher Germany
• DG Flugzenugbau Germany
• Sailplane Directory (Listing of all makes.)
• Schmepp-Hirth Germany
• Ximango USA (Motor gliders.)
• The Gliding Federation of Australia

MANUFACTURERS AND DISTRIBUTORS
• Airworld Germany
• Airtronics USA (R/C radios and equipment.)
• Aircraft International USA (3W distributor, power box and switches.)
• Axel's Scale Pilots Germany
• ARC Modelismo Spain (1:4 L-13 Blanik)
• Buzz Waltz R/C Designs USA
• Cermark USA (Electronics, batteries, servos.)
• Gerhard Bruckmann Austria
• Graupner Germany
• EMS Germany
• Elicker Klapptriebwerke Germany (Glider self-launch systems.)
• FEMA Modelltechnik Germany (Retracts and misc. accessories.)
• Flying Circus Germany
• Florian Luftsporttechnik Germany (Glider self-launch systems.)
• Fraesfritz Germany (CNC Scale gliders.)
• Frisch Modelbau Germany
• Hans Muller Germany
• HKM USA (Scale Gliders)
• Hobby Club USA
• Horizon Hobbies (JR Radios)
• Icare Sailplanes Canada
• Island Models Ireland
• LET Czech Republic (Scale gliders.)
• Krause Modellbautechnik Germany (Scale gliders.)
• Modellbau Beres Germany (By the Wasserkuppe.)
• Modellbau Pollock Germany
• Multiplex USA
• Nelson Aircraft USA (Giant scale hardware and accessories.)
• Propagteam Czech Republic (Instrument panels.)
• Rodelmodell Germany
• Rosenthal Modellbau Germany
• Schneider Modell Austria
• ShredAir USA
• Skymelody Vario Germany (New Total Energy vario.)
• SoaringUSA USA (Scale gliders.)
• Tom Martin Radio Control USA (Laser cut scale glider kits.)
• Tommy's Modellbau Germany (Varios)
• Tower Hobbies USA (Coverite wing covering.)
• HQ Modelflug Germany (Helmut Quabeck)
• Voltz Servos USA
• Weatronics GmbH Germany (Dual receiver system.)
• XL Sailplanes (US Distributor for Schuler, Roke and other German Kits.)

PERSONAL SITES AND BUILD LOGS
• Alrobert Germany
• Michael Ohlwein Germany (Very good site for scratch builders.)
• René Bartlomé Switzerland (Sperber photo build log.)
• Robert Yan's RC Gliders Hong Kong
• Bauprojekt Sperber Junior Germany (Sperber photo build log.)

SOARING MUSEUMS
• Glider Listing, Museums of North America
• National Soaring Museum Harris Hill, New York
• Wasserkuppe Museum Germany (Index of gliders at the museum.)
• Wasserkuppe Germany (Links to all venues.)
• Flugwerft Aircraft Museum München, Germany

TOW PLANES
• Gerhard Bruckmann Austria
• Wega Sunshine Germany
• Ice Moldings England

VINTAGE AND MODERN GLIDER PHOTOS
• Gunther's Vintage Sailplanes (Listing and links.)
• Modellfluggeil Switzerland (Giant model photo archive.)
• Vintage Sailplane Association
• Vintage Glider Club England
• Vintage Glider Club Netherlands
• Wasserkuppe Club Germany (See a full size Reiher being Built!)