Nimbus is an open source toolkit that allows you to turn your cluster into an Infrastructure-as-a-Service (IaaS) cloud. Feature highlights include:

• Three sets of remote interfaces: Amazon EC2 WSDLs, Amazon EC2 Query API and Grid community WSRF. Read more about interfaces.
• Storage implementation compatible with S3 REST API. Read more about Cumulus.
• Virtualization implementation is based on Xen and KVM. Read more about supported virtualization technologies.
• Can be configured to use familiar schedulers like PBS or SGE to schedule virtual machines. Read more about the workspace pilot.
• Launches self-configuring virtual clusters with one click. Read more about the context broker.
• Defines an extensible architecture that allows you to customize the software to the needs of your project. Read more about extensiblity.