You should check out StealJS which is a fork of JSPM[1]. The biggest difference between StealJS is that it uses NPM so you don't need a separate package manager

You should check out StealJS which is a fork of JSPM[1]. The biggest difference between StealJS is that it uses NPM so you don't need a separate package manager tool. Aside from that, we have built in hot module swapping so dev can be really fast (less than 200ms per change usually). Also on the roadmap is caching using Service Workers. [1]http://stealjs.com/ http://stealjs.com/