OREKIT is a free low level space dynamics library written in Java. Please visit our Gitlab instance for issues and contributions: https://gitlab.orekit.org

Orbit Determination with Python

Dr. Orbiteex - TLE/OEM 3D/2D viewer and analyser

Orbit Simulator

Orbital simulation used by The Dalton School Physics Department.

creates an accurate 3d elliptical orbit based on a json file with TLE data. still lacks a visualization engine and an actual representation of the satellites location and speed on the orbit.

A space exploration game created in Processing 3 with orbital mechanics

Interface for orbital propagation and access intervals tools

Short program making use of orbital elements to plot planet positions, in the X Y Z frame