Jewish prayer times
Android application that displays list of halachic/halakhic times for Jewish prayers (zmanim and zmanei tefillot).
An Easy GUI for IRAF Photometry
The MYRaf is a practicable astronomical image reduction and photometry software and interface for IRAF. For this purpose, MYRaf uses iraf, PyRAF and alipy via great programming language Python and Qt framework. Also MYRaf is a absolutely free software and distributed with GPLv3 license. You can use it without restrictive licenses, make copies for your friends, school or business.
2d/3d programing and Comic book
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.
Java version of Stellarium.