Lotte Next Design requirements Session support. Support concurrent users. Works over multiple resources. Faster and more robust. Technologies Javascript frameworks backbone.js (with handlebars.js templates) ember.js angular Server-side node socket.io/sockjs redis Other Native spellchecking https://developer.mozilla.org/en/Controlling_spell_checking_in_HTML_forms http://blog.whatwg.org/the-road-to-html-5-spellchecking