A simple particle system physics engine for processing. I've designed this to be application / domain agnostic. All this is supposed to do is let you make particles, apply forces and calculate the positions of particles over time in real-time. Anything else you need to handle yourself.
* padded block links * typesetting buttons * contrast to manage focus * color to manage attention * white space for relationships * letter spacing * auto-focus on input * custom input focus * hover controls * verbs in labels