Star Pilot - The most full featured program on the market for the Palm Computing Platform ®. Star Pilot has a database of almost 1500 stars and 90 constellations as well as the ability to plot the position of planets, the sun, and the moon in the sky.
Sol! II - computes Sun Rise, Sun Set, Day Length, start and end of Civil, Nautical, and Astronomical Twilight, and the length of day with twilight times added for any location on the planet. Sol! II has a Sun Information and Sun Compass display and can automatically adjust for Daylight Savings Time (DST) in 50 different time zones. In addition, Sol! II also now includes a sun tracker that plots the position of the sun through its daily arc!
Moon Info! - A utility for computing Moon Phase, Percent Illumination, Rise, Set and other interesting information about our closest neighor in the Solar System!
Messier! - A program that computes the rise, set, altitude, azimuth, and other information about all of the Messier objects. It also includes a portable observation log to log your observations in the field and later export them to your desktop computer.
Planets! - A program that computes the rise, set, altitude, azimuth, and other information about all of our neighboring planets. It also includes a portable observation log to log your observations in the field and later export them to your desktop computer.
J-Moons! - A program that shows the current position of the Galilean satellites of Jupiter
Saturn! - A utility for computing the apparent position of the 8 largest moons in relation to Saturn and its rings and other interesting information about Saturn!
Sol System - An orrery program that lets you view the solar system from various angles
Solstice! - A program that computes solstices and equinoxes for the years 1904 to 2031
Night Sky - An application that is designed to help backyard astronomers, teachers, parents and any one else learn about the 88 constellations and their major stars. A simple user interface allows users to quickly display any of the constellations and a single tap further identifies any displayed star.
NGC! - A complete NGC/IC observing program. It can display information about over 13,000 NGC/IC objects as well as keep an observer log that may be exported to your desktop computer.