Kerykeion 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.
The most comprehensive collection of accurate astronomical algorithms in (C++, Objective-C and) Swift.
Adhan for Dart / Muslim Prayer Times Library. Now retrieving Prayer time in Dart easier than ever.
KSP Trajectory Optimization Tool
Geo-Astronomical library for artist
Astrology Calculator calculates moon's rise/set times, moon Age, moon phases and Zodiac Sign for location and time
The Astrobook source files
X-PSI: X-ray Pulse Simulation and Inference
The science fiction calculation spreadsheet
GPU Framework for Radio Astronomical Image Synthesis
Containerized radio interferometry scripting framework -- NB: Classic version is no longer in active development, use stimela 2! See README for details.
arduino library to calculate moon day and sunrise and sunset times
Chinese Calendar in calendar(1) for BSD, Linux & macOS
Parallelized rotation and flipping INvariant Kohonen maps
GUI application for calculating human-visible colors of celestial bodies from their photometry data
Astrarium — open-source planetarium software for Windows
A Python package for manipulating and correcting variable point spread functions. Maintainer: @jmbhughes
A modern, high-performance and comprehensive set of tools for transformations between any standard and user-defined reference frame.
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