Stacking program, astrometric (plate) solver, fits file viewer
Data Analysis, Simulations and Visualization on the Sphere
Satellite tracking software
Astronomy CCD capture software
Hallo Northern Sky planetarium program
All-in-one Astrophotography Software Works on multi-OperatingSystem
Lynkeos is an astronomical webcam image processing software for OS X.
Navigational Algorithms - Marine navigation
Provide Pascal interface for standard astronomy libraries
Routines for wavefront propagation in IDL, Matlab, and Python
Earth orbits and satellite coverage display in 3D on your laptop.
Collimation Circles, app for easy telescope collimation
A collection of java astronomy tools
Fortran library to compute positions of celestial bodies
Night Vision is a "planetarium" program written in Java
A free, fast and accurate routine to compute the position of the Sun
Open Source Astronomy Tools
BoPlanets shows planets relatively to an observing planet.
Command-line tools for astronomy and astrophysics
ProStack - a platform for image processing and analysis