Methods for updating applications

A method includes transmitting, from a computing device to one or more server computers, an update request corresponding to a client-side application package that is stored at the computing device. The client side application package contains a plurality of application components. The method also includes receiving a differential update package in response to the request. The differential update package includes a plurality of deltas, wherein each delta corresponds to one of the application components contained in the client side application package. The method also includes applying the plurality of deltas to modify at least some of the application components from the plurality of application components.