Website of the RegiStax astronomical software.

Website about ScopeDriver software.

Stellarium is planetarium software that shows exactly what you see when you look up at the stars. It's easy to use, and free.

An interface to help you pay your own visit to our celestial neighbor. Happy lunar surfing.

Website about the Astroart astronomical software.

Home page for AstroPlanner. Astronomical observation planning for Macintosh and Windows

This program enables you to draw sky charts according to the data of 15 catalogs of stars and nebulae, as well as plot the positions of planets, asteroids and comets.

Celestia, a real-time 3D space simulation featuring a database of over 100,000 stars, nearly a hundred solar system, objects, and a complete catalog of extrasolar planets.

CyberSky is an accurate, yet easy-to-use planetarium program that provides an excellent way to learn about astronomy and explore the sky visible in the distant past, the present, and the far-off future.

The Deep Sky Database - an online observing list generator using the SAC 7.2 database.