|Initial release||March 2008|
|Stable release||4.0 / 8 May 2013|
|Preview release||3.7.80 / 9 October 2012|
|Written in||C++, C, Ruby, Java, Shell script, lex, yacc|
|Platform||Hypervisors (Xen, KVM, VMware)|
|Available in||English, Russian, Spanish|
|License||Apache License version 2|
OpenNebula is an open-source cloud computing toolkit for managing heterogeneous distributed data center infrastructures. The OpenNebula toolkit manages a data center's virtual infrastructure to build private, public and hybrid IaaS (Infrastructure as a Service) clouds.
OpenNebula orchestrates storage, network, virtualization, monitoring, and security technologies to deploy multi-tier services (e.g. compute clusters) as virtual machines on distributed infrastructures, combining both data center resources and remote cloud resources, according to allocation policies. According to the European Commission's report about the future of cloud computing from a group of experts "... only few cloud dedicated research projects in the widest sense have been initiated – most prominent amongst them probably OpenNebula ...".
The toolkit includes features for integration, management, scalability, security and accounting. It also emphasizes standardization, interoperability and portability, providing cloud users and administrators with a choice of several cloud interfaces (EC2 Query, OGF OCCI and vCloud) and hypervisors (Xen, KVM and VMware), and a flexible architecture that can accommodate multiple hardware and software combinations in a data center.
OpenNebula is sponsored by C12G.
OpenNebula is used by a variety of organizations, including hosting providers, telecom operators, IT services providers, supercomputing centers, research labs, and international research projects. Some other cloud solutions leverage OpenNebula as the cloud engine or kernel service, ClassCat, Hexagrid, and so on.
See also 
- Nebula (computing platform)
- Amazon EC2
- Cloud computing
- Cloud computing comparison
- Cloud infrastructure
- Abiquo Enterprise Edition
- "OpenNebula Key Features and Functionality". OpenNebula documentation. Retrieved 13 October 2011.
- R. Moreno-Vozmediano, R. S. Montero, and I. M. Llorente. "Multi-Cloud Deployment of Computing Clusters for Loosely-Coupled MTC Applications", Transactions on Parallel and Distributed Systems. Special Issue on Many Task Computing (in press, doi:10.1109/TPDS.2010.186)
- R. S. Montero, R. Moreno-Vozmediano, and I. M. Llorente. "An Elasticity Model for High Throughput Computing Clusters", J. Parallel and Distributed Computing (in press, DOI: 10.1016/j.jpdc.2010.05.005)
- European Commission Expert Group Report. "The Future of Cloud Computing"
- B. Sotomayor, R. S. Montero, I. M. Llorente, I. Foster. "Virtual Infrastructure Management in Private and Hybrid Clouds", IEEE Internet Computing, vol. 13, no. 5, pp. 14-22, Sep./Oct. 2009. DOI: 10.1109/MIC.2009.119)
- "OpenNebula @ GSoC 2010". Google Summer of Code 2010. Retrieved 27 December 2010.
- "Featured Users". OpenNebula website. Retrieved 13 October 2011.
- OpenNebula Website
- OpenNebula Blog
- OpenNebula Development Portal
- OpenNebula Ecosystem
- OpenNebula Contributors
- Mark Hinkle (20 January 2010). "Eleven Open Source Cloud Computing Projects to Watch". Socialized Software. Retrieved 27 December 2010.
- Peter Sempolinski and Douglas Thain, A Comparison and Critique of Eucalyptus, OpenNebula and Nimbus, IEEE International Conference on Cloud Computing Technology and Science, November, 2010.