OpenNebula is fully open-source software distributed and licensed for use under the terms of the Apache License, Version 2.0.
If you are interested in building a private cloud on top of an existing VMware vCenter environment, we recommend you try vOneCloud, a CentOS Linux virtual appliance for vSphere that contains all required OpenNebula services optimized to work on existing VMware vCenter deployments.
If you are building a cloud on Xen, KVM, VMware ESX, or on VMware vCenter combined with any of the previous hypervisors, you can download from the following table the source code or the packages for your favorite Linux distribution.
Get the source code from GitHub
Download packages from repository of Linux distros
Download packages and tar source files
Source code repository