The Availability Calendar Rules module allows you to set an availability calendar state using Rules. This module aims to fulfill the many requests for setting Availability Calendar states in the Availability Calendar issue queues.
Push Notifications module for Drupal is simple Rules based plugin to send Push Notifications. Allow to send Push Notifications to authorized and anonymous users to your site users desktop and mobile device, if even they are out of site. Notifications looks like, that Facebook send and providing by Google Cloud Message API. Perfectly works with both HTTP and HTTPS sites. Installs and setup like anyelse Wordpress plugin – acivate and print settings – that is all.