The AstroViewer The AstroViewer planetarium applet shows a sky map for any time and any location on Earth. Individual printable sky maps (GIF, PDF) can be created. Requires Java.
Starry Night A wonderful virtual plantarium. Probably the best looking one out there on any platform. Available for Wndows.
MacAstro by Nicolas Mercouroff, is a program that allows you to view the sky as it appeared, or will appear, at any time, date and point on earth. It displays the position of the 8 major planets, the Sun, the Moon, and the 2500 brightest astronomical objects (stars and Messier's objects).
RAAP Collection of Utilities "primarily shareware programs that should prove useful if you're into computers and astronomy." For PC and Mac.
Exploration in Education ExInEd Exploration In Education) is a program of the Special Studies Office at the Space Telescope Science Institute. Please stop and take a look at our latest electronic offerings of Macintosh, Windows, and DOS
software available for downloading!
SEDS Planetarium Software listing Bill Arnett's listing of freeware, shareware, and commercial astronomy software for Mac (he is a Mac advocate), Windows, OS/2, and XWindows. Mac advocacy notwithstanding, the greatest number listed are Windows programs.
Windows
HomePlanet John Walker's tour de force for Windows 3.1 and 95 (two separate versions). The best "freeware" anywhere, it contains an earth map, Orrey, sattelite tracking, various sky maps, and a screen saver.
Cartes du Ciel French planetarium software. Probably the best Windows freeware out there. One of the best planetarium programs, period. Multiple languages.
Alas du Ciel French planetarium software from Canada. Anglophones can probably figure it out. Both freeware and shareware versions.
CyberSky is a colorful, easy-to-use, and very educational program that transforms your computer screen into a planetarium, allowing you to learn about astronomy by exploring the sky in the past, present, and future! Features animated skies, aimed at novices.
Earth Centered Universe A Planetarium and Telescope Control Program for Windows 3.1, 9x, NT, 2000, or XP.
MyStars is a scientifically rigourous, yet simple and educational astronomy program that helps you visualize and locate the positions of stars, planets, comets and Messier (M) objects from any location on earth and any date/time. Decent MIDI rendition of Clair de Lune.
SkyMap Software are the creators of high-quality astronomy software for Microsoft Windows. Our main product is SkyMap - a versatile planetarium and star mapping application aimed primarily at the serious amateur astronomer. By Chris Marriott.
Deepsky 200x Full featured software that focuses on preparing for an observing session. For Windows and Pocket Windows. By Steve Tuma.
Astronomy Freeware Am I (Alan Sawicki) the only one on the Internet who knows what the word 'freeware' means? It means no shareware passed off as freeware. It means I don't pass off evaluation versions as freeware. Just an occasional product with it's number of uses limited (some products don't need to be used that much). Mainly for Windows 95.
SimTel Coast to Coast Software Repository for Windows 3 astronomy software. A massive collection. A couple of Windows 95 programs located here.
MS-DOS
David Chandler has done some really useful work for DOS including:
Planet Tracker: "classroom-oriented software to teach the concepts of planetary motion"
Coeli New astronomical software for the PC which runs in DOS and all flavours of Windows. Coeli utilizes
Super VGA graphics via the VESA standard to generate highly realistic views of the heavens anywhere in
the world.
SimTel Software Repository for DOS astronomy software. A massive collection. No Astronomy sections for Windows, but Astronomy dominates the Science section.
Unix
Xsky "an interactive sky atlas for the X Window System."
