Alternativ till Urban Airship för Ruby med kommersiell licens

• Ruby
  Alla plattformar Windows Mac Linux Chrome OS Android iPhone Windows Phone iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) Firefox Opera Safari Internet Explorer Windows Mobile Chrome Ruby Node.JS Amazon Web Services Android SDK Heroku IBM Bluemix Firebase expressJS AWS Mobile Hub Appcelerator Urban Airship Parse Server Parse deployd NodeChef Backendless Pusher
• Kommersiell licens
  Eventuell licens Gratis licens Open Source-licens Kommersiell licens