1. CloudHarmony, Cloud Harmony, 2014. http://cloudharmony.com/.
2. A.W. Services, Amazon Elastic Compute Cloud (EC2), 2014. http://aws.amazon.com/ec2.
3. Amazon, AWS Total Cost of Ownership (TCO) Calculator, 2014. https://awstcocalculator.com.
4. Rackspace, Rackspace Solutions Configurator, 2014. http://www.rackspace.co.uk/solutions-configurator.
5. CloudScreener, Cloud Screener, 2014. http://www.cloudscreener.com/.