Almanac calculates the equatorial coordinates of the sun, the moon, and the planets. Using these results it can calculate the times of rising, setting, and meridian transit for each of these celestial bodies. Additionally, it can calculate the beginning and ending of astronomical, nautical, and civil twilight. The results of the calculations are formatted and written into a text editor.

Saturn's ring system makes the planet one of the most beautiful objects in the solar system. It was difficult to reflect it's beauty by computer simulation, but after a lot of experiments on cutting edge of modern 3D technologyies we have reached the target of really photo-realistic simulated animation of this spectacular scene. Ring's shadows, incredible cosmic sunrises, atmospheric refraction and many other effects will catch your eyes.

If you need to create 3D web buttons and you need them yesterday and they have to look good this is the tool for you. Easy Web Buttons lets you point and click your way to beautiful buttons in minutes. Change colors, fonts, gradient effects and more! By changing various colors and refraction options you can create glass or plastic looking buttons in a snap. Bring your buttons off of that page with Easy Web Buttons! Generate Javascript too!

If you need to create 3D web buttons and you need them yesterday and they have to look good this is the tool for you. Easy Web Buttons lets you point and click your way to beautiful buttons in minutes. Change colors, fonts, gradient effects and more! By changing various colors and refraction options you can create glass or plastic looking buttons in a snap. Bring your buttons off of that page with Easy Web Buttons! Generate Javascript too!

Alcyone Ephemeris is an accurate and fast astronomial ephemeris calculator covering the period 3000 BC to AD 3500. It calculates heliocentric, geocentric, and topocentric positions of the Sun (Earth), Moon, and planets in ecliptical, equatorial, and horizontal coordinates, with optional corrections for parallax and refraction; rectangular coordinates, velocity, acceleration, apparent diameter, magnitude, phase, lunar libration and more.

Integrated astronomy software suite exploring realistic skies in real time, with observing log, Sky Quiz, Live Orbits (orrery), telescope support, spoken pronunciation guidance, a half-million word Encyclopedia Astronomica, and concentrated searches embracing planets, comets, asteroids, DSOs, and up to 300,000 stars.

Looking Glass is an interactive physics package that helps students visualize and understand the effects of optical components on light rays. While creating and exploring their own lenses and mirrors, students encounter the core concepts in optics.