A planetarium software that shows a 3D simulation of the night sky
Satellite tracking software
Night Vision is a "planetarium" program written in Java
Earth orbits and satellite coverage display in 3D on your laptop.
Fortran library to compute positions of celestial bodies
automation tool to analyze Foucault test results of parabolic mirrors
ProStack - a platform for image processing and analysis
Command-line tools for astronomy and astrophysics
Astronomical Database
A free, fast and accurate routine to compute the position of the Sun
Collimation Circles, app for easy telescope collimation
BoPlanets shows planets relatively to an observing planet.
A tool for planning and logging your astronomical observations.
*nix Sidereal Clock