How to: Notifications
* [Noticed](https://github.com/excid3/noticed) - ActionMailer-like Notification System for your Ruby on Rails app.
* [Ruby Push Notifications](https://github.com/calonso/ruby-push-notifications) - iOS, Android and Windows Phone Push notifications made easy.
* [Rpush](https://github.com/rpush/rpush) - The push notification service for Ruby which supports Apple Push Notification Service, Google Cloud Messaging, Amazon Device Messaging and Windows Phone Push Notification Service.
* [webpush](https://github.com/zaru/webpush) - Encryption Utilities for Web Push protocol.