1. Amazon Elastic Compute Cloud (EC2), http://aws.amazon.com/ec2/
2. Amazon Simple Storage Service (S3), http://aws.amazon.com/s3/
3. Google App Engine, http://code.google.com/appengine/
4. Saleseforce CRM, http://www.salesforce.com/crm/
5. Fujitsu Global Cloud Platform, http://www.fujitsu.com/global/solutions/cloud/solutions/global-cloud-platform/