» 3D Solar System Simulator    A Java applet that shows an interactive 3D representation of the planets and satellites of the solar system.    http://www.inicia.es/de/avillanueva

» AstroFly    [freeware - Win 98/ME/2000/XP] Three-dimensional models of the Milky Way neighborhood.    http://www.anumajor.com/astrofly/index.html

» Celestia    A free 3D space simulator that lets you travel through the solar system and beyond to over 100,000 stars. [Windows, Mac; Open source]    http://www.shatters.net/celestia/

» ChView    [Freeware - Win3.x/95] A three-dimensional aid to viewing some of the nearer stars of our galaxy, navigating the distances between them, and accessing basic stellar information.    http://members.nova.org/~sol/chview/

» Copernic space simulator    A freeware program that lets you navigate through the solar system neighbourhood at different times in past or future, and to see the sky in a stereographic projection.    http://www.regulus.ro/copernic/ecopernicus.htm

» GrandTour    Accurate wireframe simulator for the Voyager and Giotto space missions, with animation capability. Developed at JPL for science/navigation, and filmed by the BBC/NOVA. Conveniently runs from any Windows/DOS. Freeware.    http://www.faithreason.org/grandtour

» Gravel    [freeware - Windows] Models the interaction between bodies in space according to Newtonian physics.    http://www.rclsoftware.org.uk/gravel/

» Gravity Simulator    [freeware - Win 9x/NT/2k/XP] Simulates orbits of planets and other celestial bodies.    http://www.orbitsimulator.com/gravity/articles/what.html

» Liftoff Space Simulator    [commercial - Windows] Hands-on presentations and simulations about being an astronaut and commanding the space shuttle.    http://www.eti-tech.com

» OpenUniverse    [open source - Win95/98/NT/2000 or Unix/Linux and OpenGL] Newest NASA data creates a fast 3D display of our home solar system, 25000 stars, galaxy, planets, moons, asteroids and even controllable spacecraft.    http://www.openuniverse.org

» Solar Kingdom    [commercial, demo available - Win95/98/NT] A solar system simulator and planetarium, with planetary encyclopaedia.    http://www.silverfrost.com

» Solar System Applet    [online Java applet] This 3-d solar system applet can be rotated and zoomed with the mouse. Below it are links to other online gravity simulators and resources for building solar system simulations.    http://www.burtleburtle.net/bob/physics/solar.html

» Space simulator and 3d engine tutorials    Space simulators reviews and tutorials to program a 3d engine for a space sim.    http://www.spacesimulator.net

» SpaceWander Virtual Space Trip!    SpaceWander's award-winning multimedia tour of the Universe features real space pictures from NASA    http://www.spacewander.com

» StarStrider software 3D planetarium    [shareware - Win 98/ME/2K/XP] A 3D software planetarium. Photo realistic real-time 3D renderings of 2 million stars, galaxies, nebulae, and the Milky Way. Includes several educative tutorials.    http://www.starstrider.com/

» Starry Night    [commercial - Win95/98/NT, Macintosh] A planetarium and solar-system simulator; lets you view the universe from anywhere in our planetary neighbourhood in the past, present, and future.    http://www.starrynight.com

» Xstar N-body Solver    [open source - Unix] Displays results to the screen or can be used as a screen saver. Includes a college level introductory text on the n-body problem.    http://www.midwestcs.com/xstar/