Solar System Visualization - [free - online] Animations and movies of solar system objects and spacecraft.

Sky3D - [shareware - Win95/98/NT] Offers realistic views of entire sky with interactive and three-dimensional view modes.

Solar Kingdom - [commercial, demo available - Win95/98/NT] A solar system simulator and planetarium, with planetary encyclopaedia.

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

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.

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.

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.

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.

StarStrider - [Win 9x shareware] 3D planetarium program designed to let you visit any location in our stellar neighborhood.

Virtual Galaxy Project - [freeware - DOS] Interactive 3D virtual reality Solar System which allows users to "fly" to and around nearby stars in the Milky Way Galaxy.

Orrery - [commercial - Acorn/StrongARM RISC OS] An orrery is a physical or virtual model of our solar system.

Gravel - [freeware - Windows] Models the interaction between bodies in space according to Newtonian physics.

Gravel - Free simulation software which models the interaction between bodies in space according to Newtonian physics.

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.

1st Light - Solar System Simulation - [freeware & commercial versions - Windows] A fully interactive 3D solar system creation tool and screensaver that allows you to throw out a thumb and hitch a ride through our incredible solar system.

3D Solar System Simulator - A Java applet that shows an interactive 3D representation of the planets and satellites of the solar system.

Planetary Simulation - [commercial, demo available - Windows] Planets is a simulation where you can define a number of objects --stars, suns, or planets. Once defined, you can run the simulation and watch what happens as gravity acts on these objects.