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.

A space exploration game created in Processing 3 with orbital mechanics

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.

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