pyanetiA multi-planet Radial Velocity and Transit modelling software
pymeeusLibrary of astronomical algorithms in Python
accrete-starform-stargenAn attempt to reconcile all available versions of the Accrete/Starform/Stargen solar system generator.
PlanetaryImagerQt capture software for astronomy, mainly planetary shooting
SpaceProjectA top-down 2D, procedurally generated space exploration and shooter game using libGDX. Kinda like Asteroids, only a little bigger.
ephemeris-compute-de405A command-line tool for producing tables of the positions of solar system objects over time.
kerykeionKerykeion is a python library for astrology. It can generate SVG charts and extract all data about a birthchart, a composite chart and a transit chart.
DrawSpaceSpace-game oriented rendering engine
GroundGrowingOpen Source Unity3d Planetary Terrain Editor Extension with incremental background updates via multithreading