EB Play 2.0 with Peter Hausel of Typesafe Netty , an asynchronous event-driven network application framework, used to be part of JBoss, used by Play 2 Tether , is an HTML5 app , but then how can it connect to both the cell network and the WiFi network at the same time? AV PhantomJS , headless WebKit with JavaScript API, by @ariyahidayat Zombie.js simulates a browser in JavaScript, by @assaf Travis CI , continuous integration in the cloud, free for open source projects, integrated with GitHub XPath 3.0 functions having access to the variables in scope but not to the context doesn't seem to make sense (what would be the downside of allowing both); let's see what @michaelhkay take is on @ebruchez 's question