Apache CloudStack

Apache CloudStack is an Infrastructure as a Service platform for deploying and managing large networks of virtual machines. Service providers run it to offer public cloud services, and companies use it for on-premises private clouds or as part of a hybrid setup.

It bundles the full stack of an IaaS cloud: compute orchestration, Network-as-a-Service, user and account management, a native API, and resource accounting. Operators manage the cloud through a web interface, command line tools, or a query based API, and it runs across VMware vSphere, KVM, XenServer, XenProject, Hyper-V, OVM, and LXC.

CloudStack is an Apache Software Foundation project under the Apache License 2.0, with more than 150 known organizations running it in production. Development happens on the official Apache Git repository, mirrored read-only to GitHub.