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The programs below are free PC programs which were designed for amateur astronomers and educators.
	Satellites of Saturn v2.0 This program displays the relative locations of Saturn's moons for a given date and time. Preview satsat2.gif.
	Galilean Satellites v5.3 This program displays the relative locations of the moons of Jupiter for a given date and time. Preview galsat53.gif.
	Tracker v6.0 This program displays the relative locations of the natural features on Jupiter's southern hemisphere such as the Great Red Spot as well as the impact scars of comet Shoemaker Levy-9. The longitude of the central meridian of Jupiter is also displayed for a given date and time. Preview tracker6.gif. Tracker's data file can be updated using longitudes on Zac Pujic's Southern Astronomical Society: Observing Jupiter page.
	Jovian Moon Events v3.0 High Accuracy Computes the times of eclipses, transits and occultations for Jupiter's four largest satellites to withing one minute and prints the results to a file. Preview JAN1998.JME.
	Binary v3.0 This program simulates eclipsing binary stars and displays the light curves. Preview binary3.gif.
	Dan's Astronomy Software Collection Links to Windows, MS-DOS, Macintosh, and UNIX astronomy software. Over one hundred freeware and shareware astronomy programs from programers around the world.