listed in alphabetical order!
HomePlanet	Home Planet, a comprehensive astronomy / space / satellite-tracking package for Windows. Home Planet is in the public domain; it is a free software. It is not shareware--you don't have to register it or pay anybody, and the version you download is fully functional as soon as you install it. You are free to give copies to your friends, post it on other systems, and otherwise use and distribute it in any way without permission, restriction, attribution, or compensation of any kind.
Orbit	Ballistic simulator "Orbit" allows the physical principles of the motion in the gravitational field of the Earth to be demonstrated and learned. You can calculate with this program the ballistic trajectories of the thrown bodies and orbits of spacecrafts and visualize the astroballistic situation on the flat map of the world and on the rotating globe in the real time.
Satbuster	This program lets you track every satellite for which its orbital elements are available, Space Shuttle and International Space Station too. Satbuster is for everyone who is involved with the satellite tracking both beginners and experienced people, backyard astronomers or radio amateurs. It is especially designed for visual observation. Tabular data are integrated with sky maps: even an absolute beginner can easily track and recognize satellites.
SatSpy	SatSpy is a computer program that opens the way to the world of satellite viewing. Practitioners of this exciting hobby watch orbiting satellites using nothing more than their eyes and perhaps a pair of binoculars. SatSpy lets you do your own pass predictions, something that just a few years ago could only be done by the most powerful government computers.