Aciqra is a free and open source virtual planetarium and sky mapping program which tracks celestial bodies including planets, deep sky objects and stars to an accuracy of a fraction of a degree for thousands of years into both the future and the past.

Get a quick overview on what is going on todays night sky.

Authentically mimics a BSOD, but will simulate startup screens seen during a system boot.

BlueStacks runs Android OS and apps on Windows PCs with instant switch between Android and Windows.

Celestia is a free space simulation that lets you explore our universe in three dimensions. Unlike most planetarium software, Celestia doesn't confine you to the surface of the Earth.

Desktop Graffitist is a small program that enables you to spray paint your desktop, and anything else that might appear on screen.

Allows you to monitor in near real-time a variety of natural hazard events that are occurring anywhere around the world.

EarthView is a dynamic desktop wallpaper and screen saver, which displays beautiful views of the earth with daylight and night shadows.

Electric Sheep is a collaborative abstract artwork founded by Scott Draves. It's run by thousands of people all over the world, and can be installed on any ordinary PC or Mac.

Google Earth lets you fly anywhere on Earth to view satellite imagery, maps, terrain, 3D buildings, from galaxies in outer space to the canyons of the ocean. You can explore rich geographical content, save your toured places, and share with others.

View Mars with this program from NASA.

From web to desktop to full dome planetarium, WorldWide Telescope (WWT) enables you to explore the universe, bringing together imagery from the best ground and space-based telescopes in the world and combining it with 3D navigation.

Draw on your Windows XP/Vista desktop using animated fire.

The Overlooked Objects Log (OOLog) is very similar to The Ultimate Messier Object Log, except it deals with the 45 objects in Brent Watson's excellent book, "Finder Charts of Overlooked Objects."

A free, fully featured model rocket simulator that allows you to design and simulate your rockets before actually building and flying them.

Converts images to text art.

Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.
It is being used in planetarium projectors. Just set your coordinates and go.

Displays weather radar satelite information in the US.

A free, open source, interactive hypnosis program.

The Weather Watcher Live application was designed to be your personal, real-time Windows desktop weather station. View real-time weather conditions from WeatherBug or NWS.

Uses the latest 3D technology to show the objects of our solar system.

World Wind lets you zoom from satellite altitude into any place on Earth. Leveraging Landsat satellite imagery and Shuttle Radar Topography Mission data, World Wind lets you experience Earth terrain in visually rich 3D, just as if you were really there.

Watch weather like never before on Windows and Mac. See the weather picture, not just numbers.