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 ## PaaS
   * http://restlet.com/products/apispark/ - APISpark enables any API, application or data owner to become an API provider in minutes via an intuitive browser interface
-  * https://cloud.google.com/appengine/ - Google App Engine gives 28 instance hours free, 1 GB NoSQL Database and more
+  * https://cloud.google.com/appengine/ - Google App Engine gives 28 instance hours/day free, 1 GB NoSQL Database and more
   * https://www.engineyard.com/ - Engine Yard provides 500 free hours
   * http://azure.microsoft.com/ - MS Azure gives $200 worth of free usage for a trial
   * http://hpcloud.com/ - $300 credit over 90 days