An open source HTML 5 canvas/webgl based isometric tile renderer? Sign me up!
Can't remember all 718 Pokémon, their types and their type effectiveness? Then this is the App for you!
Beautiful animated vectorgraphic gauges. Need I say more? Open source. There.
It works pretty well, doesn't it? That big green bar is the "value" bar. The smaller, darker bar below it is used for benchmarking. That's why it's called the "benchmark" bar. The little white stripe is the "target". Notice the pretty animation when it refreshes? Ain't it neat? And it's all customisable as well! All colors, gradients, labels, units, sizes. Pretty much everything!
I will open source it as soon as I fix some of the dependencies it has on jQuery right now. I want it to be completely independent from any external libraries, except for Raphael.js.