Free particle physics software for mac

Requirements:
MacOS 8.1 or later, CarbonLib.

Interactive Web Physics (IWP) is a Java utility, a Web-based animation and problem designer tool.

Anyone can quickly design mathematics or physics animations and simulations that run in a web browser. Unlike other solutions, no knowledge of programming is required.

IWP Animator allows a student to fully explore and interact with a physics or mathematics problem: pause, rewind, and step through time as well as adjust the inputs to the problem to change the outcome.

The Animator reads Problem Files (XML files) containing parameter data that describes a situation that could be modeled with parametric equations or Euler + RK2 + RK4 simulations. Automatic graphing of displacement, velocity, and acceleration components is built in.

IWP Designer is a companion tool that makes IWP XML Problem Files easy to create. Many unique types of problems can designed using a combination of primitive objects: mathematical inputs, outputs, solid objects, vectors, window ranges, graph ranges, and time parameters.

With relative ease, anyone can create an equation system that makes an animation move. The designer has visual menus that are responsive and easy to navigate.

High Particles is a simple but cool music visualizer for iTunes created with Quartz Composer.
There are 4 particles emitters that respond to your musical taste generating amazing effects.

Enhancements
- Code optimized in order to run in older macs.
- The four emitters now responds correctly to each interval of the spectrum.
- The CD Stop spining if no music is currently playing.

Startrail is a little and simple Mac OS X application that will simply leave a trail of shiny stars behind your mouse pointer, wherever it goes. Thats it, for now.
Note: Startrail is free, so feel free to download it and use it as long as you please. Suggestions for improvements are very appreciated. And if you like it, please consider a small donation to support its development.
Main features:
- Different particles to choose;
- Dock effect;
- Mouse gestures effect;
- Configurable particle properties;
- Configurable trail properties;
- Configurable mouse sensitivity;
- Autoupdate;
- Start at login.

Enhancements
- New particles;
- Dock effect;
- Mouse gestures effects;
- Configurable particles number;
- Wind;
- Inverted gravity;
- Autoupdate.

Brutal Chess features full 3D graphics, an advanced particle engine, and several different levels of intelligent AI, inspired by the once popular "Battle Chess" released by Interplay circa 1988.
Enhancements:
- A much improved AI
- Graphical improvements (Reflections, textures)
- Improved piece movement animations
- Numerous bug fixes to the chess engine
- Ability to drop a piece by right clicking.

This is an OpenGL Screensaver for Mac OS X. It has been written and tested on a Cube with 450 MHz and the stock ATI Rage 128 card. On this setup in a resolution of 1152x870 it runs to our satisfaction. The higher the resolution, the better it should look.

Klaus and Nat! hacked this up on a lazy weekend to experiment with Altivec coding, but unfortunately we never got around to do the Altivec stuff. There isnt a whole lot to be saved by doing Altivec ourselves, because most of the math is done by OpenGL. So an Altivec version is unlikely right now.