Helios : Mobile Backend Framework
Helios framework provides essential back end services for iOS apps that developers can utilize to develop their app easily. The open source framework provides various useful features such as data synchronization, push notifications , in-app purchases, passbook integration, logging and analytic etc. Using this framework developers can have a client-server app up-and-running in no time. Helios is built on the Rack web server interface and can be added into any existing Rails or Sinatra application easily or can be used by itself.