- HTML5 (including Videos, Canvas, Geolocation, Files API, Persistent storage, History API, Canvas, WebGL, WebSockets, WebWorkers (ok here we are more on core JS), postMessage…);
- Fully browser side application;
- CSS (2 or 3);
- Semantic Web.
This list might not be exhaustive (there were usually two talks during the same slot, so I could not follow all of them), but this is what I saw: a lot of HTML5 related stuff, some "in the browser application" talks, one speech about CSSs (excluding visualization/others related talks which incidentally spoke about CSS), and one about Semantic Web (and licensing).
In a broader way, this kind of conference shows the world that the web is not "easy": it embraces many concepts and technologies, and getting it right might not be as easy as one could thing. It also tells IT directors (the ones in old fashion industries - not at AF83), that putting the right resources of theses activities is important, and no, don't "choose jQuery so that DB people will be able to hack the frontend from time to time", and yes, promoteJS!