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. 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. Solar Kingdom - [commercial, demo available - Win95/98/NT] A solar system simulator and planetarium, with planetary encyclopaedia. 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. 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. Spacesimulator.net - Provides tutorials on how to program a 3d engine for a space simulation. 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. AstroFly - [freeware - Win 98/ME/2000/XP] Three-dimensional models of the Milky Way neighborhood. Gravity Simulator - [freeware - Win 9x/NT/2k/XP] Simulates orbits of planets and other celestial bodies. 3D Solar System Simulator - A free Java application that shows an interactive 3D representation of the planets and satellites of the solar system. Universe Sandbox - Interactive space simulator created by Dan Dixon. It includes the solar system, the nearest 1000 stars, the local group of galaxies and an unlimited number of fictional scenarios. MPL3D Solar System - Interactive 3D space simulation of the close universe in real time. The Celestia Motherlode - The addon repository for the 3-D space simulator Celestia. It includes tours, spacecraft, asteroids and fictional universes. AstroGrav - A precision solar system simulator that calculates the gravitational interactions between all astronomical bodies, so that the motions of asteroids and comets are accurately simulated. Superb interactive 3D views, and a huge range of features. [Commercial, free demo, multilingual] Copernic Space Simulator - A freeware program that allows the user to navigate through the solar system neighbourhood at different times in past or future and see the sky in a stereographic projection. Orbiter Space Flight Simulator - ORBITER is a free flight simulator that goes beyond the confines of Earth's atmosphere. It is not a space shooter, and aims to be as realistic as possible.