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