Interactive astronomy program for Unix/Linux/OSX systems with X Windows and Motif. [Free and commercial versions, source - Unix]

Planetarium program showing the sky on any date, from any place on earth. Has features to benefit a wide range of interest levels, from the beginning hobbyist to the seasoned professional. [Commercial, Win98/NT, MacOS]

Planetarium and telescope control program. [Shareware - Win3.1/95/98/NT]

Shows the daylight face of the Earth, the position of the sun, the position of the moon and its phase. [Freeware by Andrea Esuli - Windows 9x/NT/2k/XP]

Shows a realistic sky in 3D, as with the naked eye, binoculars or a telescope, including fisheye projection for domes. [Free open source (GPL) - Windows, Mac, Linux]

An astronomy shareware program. It includes simulations of the night sky (including NGC objects) and solar system. It also plots user-definable graphs, displays space images and comes with various utilities such as an astronomical calculator.

Planetarium program which lets you view the sky from anywhere in the universe. [Commercial - Windows XP/Vista, Mac OSX]

Interactive night sky plotter. [Freeware - Windows]

Planet2010 high accuracy astronomy software using VSOP87 planetary theory for calculating the positions of all of the planets within our solar system. Software is accurate for years between 1900 and 2100 (Commercial - win95,98,NT,win2000,XP).

Observation planning, charting and logging software. [Commercial - Win95/98/NT]

A CD-ROM planetarium and star-charting program equally suited to both the casual stargazer and the serious amateur or professional astronomer, although its feature list will appeal especially to the more advanced user. [Commercial, demo available - Win95/98/NT]

Desktop planetarium and charting program. [Commercial - Dos, Win3.1/95/NT]

Displays appropriate sky area on monitor for any date. [Freeware - Windows]

Simple display of the planets for any given date. [Java applet]

Perseus is a complete desktop planetarium. Software features 3D solar system objects and scripting function for lecturers, plus ASCOM support. Italian and English versions are available.

Celestial navigation software with star finder, vetor chart and GPS interface. [Commercial, demo available. Windows]

Planetarium program generating accurate charts, with stars, planets, comets and asteroids. Orrery views make it a useful teaching tool. [Shareware - Win3.1/95/98/NT]

Resource for deep-sky observing. [Commercial, demo available - Win3.1/95]

Lunar observer's toolkit with real time moon simulation including libration. Identify lunar features; zoom, pan and print moon maps; monthly lunar ephemeris; many charts, diagrams and printouts. Commercial, free demo, Windows.

Astronomical software for amateur observers of the Moon. It has over 13000 features with full search data base of all the known craters including NASA Apollo landing sites.[Commercial - Win2K/XP]

JupSat95 calculates and displays the positions of Jupiter's four Galilean moons. [Shareware Win9x/NT]

Thirty full-screen Hubble photos for use as wallpaper and screen saver. [Commercial - Win95/98/NT]

A space and astronomy package, with satellite-tracking capabilities. [Freeware - Windows]