A planetarium software that shows a 3D simulation of the night sky
Stellarium renders 3D photo-realistic skies in real time with OpenGL. It displays stars, constellations, planets, nebulae and others things like ground, landscape, atmosphere, etc.
Generate star maps for anywhere at anytime. Choose from a database of thousands of deep sky objects, including all Messier, Caldwell, and NGC objects. Also allows recording of notes on viewed objects, and configuration of user-generated observation lists.
Virtual telescope written in Java for mobile phones. Uses CLDC1.1 and MIDP2.0. Tested on mobile phone with 2MB RAM and 60MB storage. The largest catalog uses TYCHO2(2.5M stars) and NGC+ IC(13k DSO) .Sky plotted in dark red. Has desktop version also.