This project is inspired on hook.event (once published on Product Hunt)
How it works
You basically create a namespace and receive a key. With the namespace in hands you can register your mobile application (Android, WP, etc) through our app to receive notifications from the namespace. On your server side, you just need to send a POST request using your key with a title and message.
Challenges I ran into
Mix APN, GCM and MPN.