MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.
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.
IBM Bluemix - IBM Bluemix is an open-standard, cloud-based platform that enables users to build, manage, and run apps on mobile, web, and smart devices.
ArangoDB - A distributed open-source database with a flexible data model for documents, graphs, and key-values.
Microsoft Cloud Platform - Microsoft approaches cloud computing as a way to help customers take a key step toward better business agility, economics, and user experiences.