Grand Tour 3D
The Distant Suns-Grand Tour 3D screen saver is a high-speed full motion solar-system simulator using OpenGL technology and accelerated graphics. The positions and rotations of each of the planets and their moons are accurate to the current date and time! ... Watch the moons of Saturn in their daily dance around the majestic ringed world or the Earth rotate under your feet. ... The constantly changing scenes assure and infinite variety of interplanetary vistas. ... ) As the day progresses you can observe the Great Red Spot of Jupiter as it wheels across the face of the giant planet.
ftp://ftp.monkeybyte.com/WinOS/ds_ss_install.EXE - 2Mb - Download - Screenshot

Planet Quest
Are we alone? It seems rather unlikely. In the last ten years astronomers have discovered over 150 planets beyond our own solar system. Soon we will know how many of them contain life. And one day there will be more charted planets than you can count. ... Flexible music playback options are included, as well as our theme music - an original composition created by Stuart Bassett. ... And, of course you'll see nebulae, galaxies, stars, suns, comets, asteroids, moons, planetary rings and even the occasional supernova in these unique and believable scenes.
http://www.3dwonders.com/planetquest/planetquestsetup.exe - 1Mb - Download - Screenshot

1st Light 3D Solar System Simulator
Welcome to 1st Light - a Solar System Simulator that allows you to throw out a thumb and hitch a ride through our incredible solar system. Or, if you prefer, 1st Light can let you become a celestial sculptor, creating any type of solar system you can imagine . ... Beyond all that, you can designate the characteristics of your planets and moons and determine their distances from the sun and each other. ... Best of all, you can create a whole solar system around a sun textured with your own head, thus proving to all who know you that the world truly does revolve around you!!
http://www.vibrant3d.com/installers/1stLightInstaller.exe - 7b - Download - Screenshot