Zeon.js console

Putting the semi colon back in js. This app could turn a textarea on any website into a JS IDE with visual type and error hinting in the days when IE9 was still hot. Click the start button in the Z-menu (bottom-right corner) to toggle a fuzzer.
By Peter van der Zee, © pvdz.ee, 2011. See a full description here. And the former front page, which was hosted on zeonjs.com (now defunct).