This is a very lightweight and power full implementation of Google Cloud Messaging / C2DM with the interactive Admin Panel. GCM Implementation is contained 2 plate form Admin Panel [PHP version:] offers a interactive UI to control App. Android Application offers a robust implementation with better error handling mechanism of Google Cloud Messaging / C2DM .

Demo: http://codecanyon.net/item/push-notificationgcm-admin-panel/8817787