Amazon AWS - Amazon Web Services offers reliable, scalable, and inexpensive cloud computing services. Free to join, pay only for what you use.
Linode - We make it simple to develop, deploy, and scale cloud infrastructure at the best price-to-performance ratio in the market.Sign up to Linode through SaaSHub and get a $100 in credit!
DigitalOcean - Simplifying cloud hosting. Deploy an SSD cloud server in 55 seconds.
Softlayer - Softlayer is the cloud computing platform that offers the services of computing, networking, storage security, and application development.
UpCloud - World's fastest cloud servers with a 100% uptime SLA!
Microsoft Azure - Windows Azure and SQL Azure enable you to build, host and scale applications in Microsoft datacenters.