AppJS uses Chromium at the core so you get latest HTML 5 APIs working.
It supports CSS3, so you have access to lots of CSS3 features like rotating elements, css3 animations, css3 shadows, css3 background, css3 box & css3 effects.
AppJS is a work in progress and needs a lot of improvement.
Checkout Website of AppJS.
Want to get update about development of AppJS then Follow AppJS on Twitter – @appjs