There are 5 repositories under ephemeris topic.
SpiceyPy: a Pythonic Wrapper for the SPICE Toolkit.
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.
A Modern Fortran Library for Astrodynamics 🚀
The astrology software "Astrolog", version 7.60
The definitive Swiss Ephemeris bindings for Node.js
Simulation of the full GPS stack, from satellites' transmission to position calculation at receivers
RINEX File Reader - Supports v2.x (GPS) and v3.x (GPS, GLONASS, GALILEO)
Swiss Ephemeris for OS X and iOS - project is unmaintained!
ES6 "re-implementation" of ephemeris calculations for sun, planets, comets, asteroids and stars.
A command-line tool for producing tables of the positions of solar system objects over time.
The Swiss Ephemeris available through Swift Package Manager
Displays time and astrological data (moon phases, positions of planets & celestial points in zodiac)
Physical units, time, reference frames, environment modeling.
🪐 Swiss Ephemeris iOS Framework
A Modern Binary Ephemeris Reader for Julia, in Julia.
A command-line tool for producing tables of the positions of solar system objects over time.
An interface to NASA-JPL HORIZONS system and other Solar System Dynamics APIs in Julia
Excel SpreadSheet Based Jyotish Calculation Tool
Java port of Ephemeris calculations by Peter Hayes
Using Sweph (Swiss Ephemeris) with Wasm (emscripten)