3DPlanetary shows you animated real time, the solar system with (actually) 22 bodies. It has made with Mesa GL libraries for the 3D related part and with Fltk (Fast Light Tool Kit) for the graphical interface.
coords is a planetarium program. It shows the sky with stars and planets at the correct positions.
KAstrHorloge is an astronomy software for Linux & KDE. KAstrHorloge has a 10,000 stars database. For any of these stars or planets, the software can compute its position in the sky of your observation site.
Nightfall is an astronomy application that can produce animated views of eclipsing binary stars, calculate synthetic lightcurves and radial velocity curves, and eventually determine the best-fit model for a given set of observational data of an eclipsing binary star system.
Parvum Planetarium: creates celestial charts. It generates resolution independent maps of very high graphical quality. They can be used for example as illustrations in books or on web pages. You may use own databases or free ones from the Internet.
QVarStar is GCVS (General Catalogue of Variable Stars) catalog browser for Unix. You can use it to search catalog by using special query language.
Satlas is an electronic atlas of the solar sprectrum and targeted primarily for astronomers who do a lot of spectral analysis work. It is based on Gtk+ and MySQL.
Sky Chart enables you to draw sky charts, making use of the data in 16 catalogs of stars and nebulae. In addition the position of planets, asteroids and comets are shown.
SkyNET is a sky chart program for .NET. It works under Mono using the Gtk# library, and more limited Qt# and #WT frontends are provided now.
SpaceChart allows you to see the stars in glorious 3D and rotate them to see them from any point of view. You can also limit which stars you want to see, according to their spectral class and luminosity, and draw links between all stars closer than a certain distance. SpaceChart works under the GNOME environment
Starcat is a viewer for the Bright Star, Hipparcos and Tycho star catalogs for use under Windows or Linux. The default catalog is the Bright Star Catalog with over 9000 stars. The Hipparcos catalog contains over 100,000 stars (above) and the Tycho catalog over 1,000,000 stars. StarCats is a visualization tool for these catalogs which also gives direct access to the catalog record data for any star by pointing and clicking.
Starchart produces astronomical charts from a variety of databases, producing output for, in rough order of quality, PostScript, X11, sunview, Atari St, IBM PC, X10, tektronix, unix plot, HP laserjet, and tty displays, on Unix, vms and other systems.
Starmap reads in the Gliese near star catalog, computes star positions, and shows an overhead 3-D view of nearby stars, letting you navigate through the 80 light years the Gliese data spans using the arrow keys.
StarPlot allows you to view charts of the relative 3-dimensional positions of stars in space. StarPlot is packaged with a program (starconvert) that converts line-oriented stellar data records to StarPlot format. Several well-known star catalogues are available from this website, complete with all the data needed for conversions.
Stars displays a map of the night sky. It is written purely in C and uses GTK+ widgets along with Gdk-Pixbuf.
XVarStar is an astronomical program written for variable star observers, and is used for searching GCVS catalogue. It allows searching by following criteria: star name, magnitude, type, constellation, and amplitude.
This has been superceded by QVarStar.