GoGrid - Best of Cloud + Best of Hosting
DigitalOcean - Simplifying cloud hosting. Deploy an SSD cloud server in 55 seconds.
FortaCloud - FortaCloud is a cloud computing services provider offering cast three continent network to ensure the maximum uptime.
Rackspace - More than 100,000 businesses trust Rackspace with their hosting and cloud computing. Get cloud, managed and hybrid hosting all backed by Fanatical Support.
Amazon AWS - Amazon Web Services offers reliable, scalable, and inexpensive cloud computing services. Free to join, pay only for what you use.
Redis - Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.