NORAD Two-Line Element Sets -- Orbital data for any satellite tracking program, up-dated regularly by CelesTrak. Visit

Northern Lights Software Associates -- A windows-based program with real time tracking of an unlimited number of satellites. Visit

GLsat -- 3D satellite tracking & visualization utility written in C++ using OpenGL, calculates current position, & displays position around the earth. Visit

AcuSat -- An application used to align satellite dishes to geostationary satellites. Visit

Orbitron - Satellite Tracking System -- For radio amateur & observing purposes, and used by weather professionals, satellite communication users, astronomers, UFO hobbyists & astrologers. Visit

TrackingSat -- Program useful to assist satellite professionals, operators & domestic users that need to install an antenna & align it with the satellites in orbit. Visit

PocketSat -- Software for PalmPilot with documentation, FAQ, data, trial download, & links. Visit

Groundstation - Gpredict -- Program that can track a large number of satellites, display the satellite data in lists and/or show the satellites on maps. Visit

AGI - Analysis Software for Land, Sea, Air, & Space -- Products, user community, support, services, training, & events. Visit

Heavens Above -- Online program that include graphics generated in real-time & customized for a location & time zone to observe satellites such as ISS, space shuttle, and iridium flares. Visit

Sebastian's Home Page -- Orbit, visual program for Windows & TLE links. Visit