Night Vision is a "planetarium" program written in Java
BoPlanets shows planets relatively to an observing planet.
Sight Reduction for Air Navigation with Python
A toolset to automate STOP analysis with Zemax OpticStudio
C API to control NexStar compatible telescopes
Cross platform Perl API to control NexStar compatible telescopes
Celestial Mechanics Engine
C++ library for very easy operating with TLE data sets and files.
Parallelized FREquency DEComposer algorithm
GIRAFFE Data Reduction Software