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astronomy
Astronomy Engine: multi-language calculation of Sun, Moon, and planet positions. Predicts lunar phases, eclipses, transits, oppositions, conjunctions, equinoxes, solstices, rise/set times, and other events. Provides vector and angular coordinate transforms among equatorial, ecliptic, horizontal, and galactic orientations.chenard
Chenard - a free chess program by Don Crossparser
Parse math expressions and render them using MathJax.sapphire
Sapphire - free modules for VCV Rack 2chainsim
Demo of interactive physics simulation in JavaScript.geocalc
Online geographic calculatorsjcadmin
A web-based interface to administrate jcblock (junk call blocker).mandelzoom
Creates video zooms into the Mandelbrot Set.zeroconfig
Dotnet Core C# library for MDNS zeroconfig browsing, resolving, and publishing. Self-contained -- no external dependencies.electrons
Simulation of mutually repulsive particles confined to the surface of a sphereflywheel
A chess engine for the web browserinterpolator
A polynomial interpolator as a single-header C++ class template.raytrace
C++ source code from my book Fundamentals of Ray Tracingephemeris
Just a bucket to hold ephemeris filesharmonograph
Browser simulation of the Victorian-era pendulum device to draw patterns on paper.gravimeter
A pendulum-based device for measuring the gravitational acceleration at a given location on the Earth's surface. Uses a GPS-referenced clock for accurate timing data.endgame
Chess endgame database generator.compressgame
Tutorial code for data compression conceptsgravsim
Gravitational simulation of the solar systemdiodeplot
Microcontroller project to measure and plot the current/voltage curve for a diode.sloth
Circuit simulation of Sloth module by Nonlinear Circuitsfreefall
Freefall - a symbolic algebra helper written in F#.Love Open Source and this site? Check out how you can help us