A handy tool designed to help beginner Astronomers.
The software Astronomy CCD Calculator uses NASA/SkyView survey resource which provides CCD images of the night sky.It helps you plan an observation by letting you play with different instruments resulting various "Fields Of View" so you can see what your camera will capture and choose the best target for the session.
A scuba diving calculator for mobile phones. If your mobile supports java (j2me) and you are a certified scuba diver, you can use this software to compute your pressure groups up to three dives per day, according to the US Navy tables.