Google App Engine using Python - Article details how to create a simple request handler for a Hello World app using Python to the Google App Engine. Amazon Web Services Online Documentation - Official library, provides documentation on services, features and APIs of AWS. Microsoft Cloud Platform Development Overview - Main portal for Microsoft cloud development.. Includes documentation, examples, support and forums. OpenStack Cloud Computing Software - Official Website of OpenStack open source cloud computing software for public and private clouds. OpenStack Heat Orchestration Templates - Source Code of OpenStack Heat Orchestration Templates maintained by Rackspace. Cloudify - Cloud orchestration and automation platform that is open source, based on the TOSCA standard, and technology and cloud agnostic.