Garrecht Ingenieurgesellschaft
- Producers of the Volkslogger GPS data logger.
- http://www.volkslogger.de/

Borgelt Instruments
- Manufacturing variometers and flight computers.
- http://www.borgeltinstruments.com/

Crabb Computing
- Agents for WinPilot, VolksLogger and Garmax.
- http://www.crabb.biz/

Filser Electronic GmbH
- Designers and manufacturers of VHF radios, electronic variometers with GPS Receivers and integrated glideslope calculators.
- http://www.filser.de/

Seagull Navigation
- NASA40 moving map for general aviation.
- http://www.seagull-navigation.de/

EW Avionics UK
- Produce IGC compatible GPS Loggers.
- http://www.ewuk.co.uk/

Tasman Instruments
- Produces variometers and combustion engine exhaust gas temperature gauges.
- http://www.tasmaninstruments.com.au/

AW Avionics
- Suppliers of surplus/used artificial horizons and associated instruments for sailplanes.
- http://freespace.virgin.net/andy.wright617/

Knauff & Grove
- Soaring Supplies.
- http://www.eglider.org/

Avionics REMF
- Manufacturers of small and light transponders and transceivers designed for gliders and ultralights.
- http://www.avionics-remf.com/

SeeYou
- Post flight evaluation and planning software.
- http://www.seeyou.ws/

Microair Electronics Pty. Ltd. (New Zealand)
- Manufacturer of aviation avionics and associated equipment.
- http://www.microair.com.au/

Sage Variometers
- Manufacturers of mechanical variometers.
- http://www.sagevariometers.com/

Shirenewton
- Trailers for sailplanes, gliders, microlight and specialist commercial applications.
- http://www.shirenewton.co.uk

Wing Dolly - by Udo Rumpf
- One Person Assembly Wing Dolly - by Udo Rumpf
- http://www.wingdolly.reach.net/

Peschges Instruments
- Developers of the VP series of soaring computer.
- http://www.peschges.com/

Skylaunch
- Glider winch manufacturer.
- http://www.skylaunchuk.com

Taskfinder Software
- Windows software for glider pilots. Taskfinder software produces GPS flight recorder analysis, task setting, task distance and thermal analysis.
- http://home.clara.net/eagle/

Cambridge Aero Instruments
- Sailplane instruments as well as flight computers, and flight recorders with the associated analysis software.
- http://www.cambridge-aero.com/

Ilec GmbH
- Manufacturer of variometers and glide computers.
- http://www.ilec-gmbh.com/

Ball Variometers, Inc.
- Manufacturers of various styles of variometer as well as supplying all kinds of glider avionics.
- http://www.ballvarios.com/