VDO computers
Manufacturer of computer with pulse meter and altimeter. Germany.
http://www.cycleparts.de/

Larsen & Brusgaard
Manufacturers of ProTrack Freefall Computer and ProDytter Audible Altimeter.
http://www.l-and-b.dk/

Aero Tech Products
Manufacturer of ZipOff gearbags and daypacks, altimeter mounts, risers, toggles, and pilot chutes. Online ordering. [Requires Java]
http://www.aerotechproducts.com/

MOLA Viewer
Offers a program to view the surface of Mars, based on data from the Global Surveyor radar altimeter. [Requires extensive Java downloads]
http://cgibin.starpower.net/mmacdonald31/demo3d/mars/index.html

ORAD Laboratory for Satellite Altimetry
Specializes in the analysis of satellite altimeter data related to problems in physical oceanography and marine geophysics.
http://ibis.grdl.noaa.gov/SAT/

Ferrer Aviation Services, LLC
Transponder and Altimeter Inspections and Repair
http://www.ferrer-aviation.com

Global AssimilatioN Applied to Modelling of European Shelf Seas (GANES)
This EU-CEO project will use satellite altimeter and radiometer data assimilated into global ocean models, to provide ocean current, temperature and salinity boundary conditions for shelf and coastal models which predict sea-levels and currents around Europe.
http://www.pol.ac.uk/oshi/ganes.html

Jason
Jason-1: mission information, status, images
http://topex-www.jpl.nasa.gov/mission/jason-1.html

CicloSport
Makes cyclometers, heart rate monitor, altimeters, and speedometers. USA.
http://www.ciclosportusa.com

Parasport Italia
Manufacturers of Skytronic audible altimeters, Altiron and Skymeter altimeters, Z1 helmets, gloves, goggles, jumpsuits, and other skydiving accessories. Catalog, product information, prices. [Background music]
http://www.parasportitalia.com/