Updated: 12/29/2005
Edu-Astron
!!Edu-Astron
[Report a dead link]

aa-55
DOS. Self-contained ephemerisis calculator, probably in C. [Report a dead link]
http://www.moshier.net/

Adastra , 4,000kb
Another astronomy program with comprehensive descriptions of celestial objects. Also at http://www.essentia.net/coeli/software/adastra.zip. [Report a dead link]
http://www.geocities.com/SiliconValley/Circuit/9810/Apps. html

Astrolog 5.40 , Rating: 5
Excellent FREEWARE Astrology program. Also at http://astrolog.offline.ee/, http://www.magitech.com/~cruiser1/astrolog.htm, http://rpkalf2.mach.uni-karlsruhe.de/~ferber/astrolog/. [Report a dead link]
http://www.astrolog.org/astrolog.htm

Astromeuss
Astronomy program with lots of calculations, for DOS. [Report a dead link]
ftp://ftp.demon.co.uk/pub/misc/astronomy/winmeuss.exe

Astronomers Clock
Shows local time, universal time, sidereal time, and julian date. [Report a dead link]
http://users.zoominternet.net/~matto/
[Screenshot]

Astronomic
Gives bunch of info on sun and moon for given day and place. [Report a dead link]
http://www.dutch.nl/rcott/astronom.htm

Astronomy on your PC
Includes Pascal source. [Report a dead link]
http://www.springer.de/phys/books/astropc/

Astronomy software
[Report a dead link]
http://freeware.intrastar.net/astronmy.htm

Astronomy software
Links to astronomy software. [Report a dead link]

Astronomy source code
[Report a dead link]

Astrotray
AstroTray provides a virtual observatory for your PC that you access from your system tray. It offers a realistic portrayal of the heavens from any latitude, longitude, and altitude on Earth, in real time. It features a handy toolbar that allows you to center, zoom, change viewpoints, and pan to any direction. You can search for objects by name and retrieve information from right-click context menus. A large number of special effects are available, including light, color, and atmospheric adjustments and high-speed animations. [Report a dead link]
http://www.sover.net/~wysiwygx/Desktop1.html

Astrowin
Windows-based astrology program, lots of options, supports many houses, progressions, much more. Also at http://ourworld.compuserve.com/homepages/allen_edwall. [Report a dead link]
http://www.megsinet.com/allen_edwall

Cartes De Ciel
[Report a dead link]
http://www.stargazing.net/astropc/

Celestia
View space from any point in the universe. This impressive package uses full color models to show you planets, classic space ships, space stations, and asteroids. View Jupiter from Io. View earth from an asteroid, and more. [Report a dead link]
http://www.shatters.net/celestia/

Celestial Maps 8
Makes free sky charts. [Report a dead link]
http://www.geocities.com/ovidiuv/maps.html

Deepspace
It prints highquality star maps in a variety of useful formats designed for use outside at night, including a 2-tone Milky Way, an option to generate a printed moon phase calendar, and a local horizon files may be associated with each observing site. This shareware version has a limited database, but is fully functional. A full commercial version is available which supports the Deep Space Navigator telescope interface, several models of digital setting circles, and the LX200 line of telescopes. Also at http://www.davidchandler.com/ [Report a dead link]
ftp://ftp.seds.org/pub/software/pc/stars/dspac554.zip

Desknite
Turn your desktop into a display of the current night sky, at any lat or longitude. A system tray-based utility that can turn your desktop background into a "live" night sky -- even in the daytime. It offers an infinitely configurable display of more than 3,000 stars, nine planets, the Sun, the Moon, and NGC objects in point-source and photoplate display styles. Other features include four projection models; flexible Alt/Az viewpoints; constellation, horizon, ecliptic, and equator lines; constellation lines and boundaries; and horizon and equatorial grids. The author also has a "plus" shareware version available. Even though light pollution levels are ever-increasing, DeskNite gives you a nice way to experience the grandeur of a dark night sky. [Report a dead link]
http://www.sover.net/~wysiwygx/Desktop1.html

Electric Astrolabe
[Report a dead link]
http://www.astrolabes.org/electric.htm

Graphdark
A calendar which shows you when a planet will be visible in your area. Also shows lunar phases on a calendar.

Download from www.rfleet.clara.net/graphdark/download.htm. [Report a dead link]
http://www.newburyas.org.uk

Heavens Above
[Report a dead link]
http://www.heavens-above.com/countries.asp

Helio
Calculate latitude and longitude of sunspots. [Report a dead link]
http://www.meadows3.demon.co.uk/

Homeplanet
Homeplanet, has earth map showing night and daytime regions, sky map, position and phase of moon and sun, positions of planets, db of 5000+ asteroids and comets, a telescope window which can be zoomed in on a piece of sky, horizon window, object catalog which allows archiving images, sounds, and tabular data about celestial objects, orrery, satellite tracking panel, view earth from window, satellite db editing, choose observing site selection from 1300 places, set time and date of observation, planetary position calculation using highly accurate VSOP87. [Report a dead link]
http://www.fourmilab.ch/homeplanet/homeplanet.html

Interactive Computerized Ephem
Interactive Computerize Ephemerisis. [Report a dead link]
http://riemann.usno.navy.mil/AA/software/docs/ice.html

Moon Atlas , Editor's Pick
Locate features, zoom in, and more. [Report a dead link]
http://astrosurf.com/avl/

Mooncalc
A DOS program which calculates many options of the position of the moon. Including moonrise, moonset, dates of moon phases, sun and moon alt and azimuth, graphical moon position with constellations, world moon visibility maps. [Report a dead link]
http://www.ummah.org.uk/ildl/mooncalc.html

Moonrisse (shareware)
Shows moonrise, set, and transit, and phase. Also sunrise and set. [Report a dead link]
http://www.iserv.net/~bsidell/moonrise.htm

Orbiter
Orbital mechanics simulator. ORBITER is a free flight simulator that goes beyond the confines of Earth's atmosphere. Launch the Space Shuttle from Kennedy Space Center to deploy a satellite, rendezvous with the International Space Station or build your own custom station in orbit, or take the futuristic Delta-glider for a tour through the solar system - the choice is yours. But make no mistake - ORBITER is not a space shooter. The emphasis is firmly on realism, and the learning curve can be steep. Be prepared to invest some time and effort to brush up on your orbital mechanics background. Very nice graphics. [Report a dead link]
http://www.medphys.ucl.ac.uk/~martins/orbit/orbit.html

Planeph
DOS. Very accurate program to compute planetary ephemeresis. [Report a dead link]
ftp://cdsarc.u-strasbg.fr/pub/cats/VI/87/

Planet Visibility
Shows graphically when a planet is visible through the year for any location on earth. [Report a dead link]
http://www.alcyone.de/PVis/english/ProgramPVis.htm

Project Pluto
Supplies astronomical software, commercial and freeware to amateur astronomers. [Report a dead link]
http://www.projectpluto.com/

Sidereal time
Shows sidereal time for your position on earth. [Report a dead link]
http://www.radiosky.com/sidclockdownload.html

Sky
It's a screen saver but can be run from cmd line. [Report a dead link]
http://www.fourmilab.com/skyscrsv/

Skycharts
Display conjunctions of planets, find objects in space, view the constellations from any viewpoint or time, find and download astronomy pics from the internet, print star charts, supports many languages, find asteroids, comets, and satellites. Includes Delphi source code here. [Report a dead link]
http://www.stargazing.net/astropc/

Skyglobe 3.6
PC planetarium. For DOS but will run under Windows. http://www.csulb.edu/~gordon/skyglobe.html, http://astro4.ast.vill.edu/skyglobe.htm, http://www.boonhill.net/sunset/astrlink.htm [Report a dead link]

Skymap Pro ($94)
Show sky chart for dates 4000BC-8000AD any place in the world. Comes with 580MB of data include 15 million sky objects. Demo is 9MB. [Report a dead link]
http://www.skymap.com/

Skyviewcafe
Java applet to view the night sky. Can be downloaded to your PC. [Report a dead link]
http://www.skyviewcafe.com/

Solar calculation details
See the PDF file for the easiest way to calculate sunrise/sunset yet. [Report a dead link]
http://www.srrb.noaa.gov/highlights/sunrise/calcdetails.html

Solar Info
View pictures of planets and info about them. [Report a dead link]
http://www.sulaco.co.za/downloads.htm
[Screenshot]

Solunar calendar
Solar and lunar info. [Report a dead link]
http://www.zianet.com/damila/freestuf.htm

Solunar Table Calculator
Calculates best fishing times along with moon rise, set, and other info. See Hobbies section. [Report a dead link]
http://www.simtel.net

Starcalc , 752kb
Another planetarium program. Also at http://www.dimula.com/starcalc/main.htm, http://www.m31.spb.ru/StarCalc/main.htm. [Report a dead link]
http://www.relex.ru/%7Ezalex/

Starlogin 4 , 13,099kb
Free astrological/astronomical software. Does lots of things including make pretty sky charts, astro charts, plot comets, calc moon phase and age, etc. [Report a dead link]
http://www.angelfire.com/sc/jstroberg/Default.html

Stellarium , 4,000kb
Sky viewing software with photo-realistic rendering of skys and sky objects (Messier objects, milkey way, galaxies, etc.). Also at http://stellarium.free.fr [Report a dead link]
http://sourceforge.net/projects/stellarium/

Transit
Astrology program for analyzing transits. Also at http://ourworld.compuserve.com/homepages/allen_edwall. [Report a dead link]
http://www.megsinet.com/allen_edwall

Win-ephem
Generates ephemerisis tables which show you the position of the planets. [Report a dead link]
http://www.geocities.com/Athens/Acropolis/4317/WinEphem.html

Winstars
[Report a dead link]
http://winstars.free.fr/english/index2.html