Norad
NORAD Propagation Models in Java v.rc
jSGP is a Java implementation of the five SGP/SDP propagators described in NORAD's Spacetrack Report No.
PhpPredict v.1.0.4
Implementation of NORAD SGP4/SDP4 algorithms in PHP 5 for determining a satellites location and velocity in Earth orbit.
Orbit Visualization Tool v.2 3
The Orbit Visualization Tool (OVT) is a software for visualization of satellite orbits in the Earth's magnetic field.
Orbitron v.3 71
Orbitron 3.71is a satellite tracking system for radio amateur and observing purposes. The program can be also used by weather professionals, satellite communication users, astronomers, UFO hobbyist and astrologers.
Gpredict v.1.3.3
Gpredict is a real-time satellite tracking and orbit prediction application. It can track an unlimited number of satellites and display their position and other data in lists, tables, maps, and polar plots (radar view).