The Cloud Computing Interoperability Forum supports all groups working to solve issues related to Cloud Computing Interoperability. Each of the groups listed below is working on some type of interoperability issue. Feel free to add your own group to the list.

Interoperability Groups (other than CCIF) - please add to descriptions or add more

• Cloud Standards Group - Established in March 2009 by the Cloud Computing Community, the group is working on documenting high level standards from the consensus of successful cloud computing offerings, starting with a Cloud Platform Reference Architecture. See the wiki for more information.
• Distributed Management Task Force - This group will focus on virtual machine formats building on OVF, groups of virtual machines (deployment groups), and VM Mobility. Lets hope they can get constituencies from VMware ESX, Redhat KVM, Citrix XEN, Oracle XEN, Amazon AMI/XEN, to a place where people can write tools that can easily work with all these
• FreeIPA - An open source project which combines many of the "root" functions a cloud interoperability federation might need such as DNS, Certificate Authority, LDAP, and NTP. Leverages the trusty and fast Netscape/iPlanet LDAP server. Fedora community.
• Internet Engineering Task Force - IETF produce the RFC's which underly the Internet. For cloud there are several relevant efforts including LISP (a mobile IP addressing proposal, needed for VM Mobility and XMPP, a protocol for clouds to talk to each other upon).
• Liberty Alliance - a widely accepted SAML-centric identity and authentication industry association with good interface documents and reference open source. Probably a good source for Cloud identity and authentiaction approaches
• Network Centric Operations - This is a group of US Govt and Govt contractors who for a long time have ben pioneers of realtime, distributed systems use for Command, Control, Communications and Intelligence (C3I). A subgroup believes that Cloud Computing is important moving forward and would like to see standard interfaces to clouds. Some folks from SRI and The Aerospace Corporation are the ones particularly interested in Cloud.
• Object Management Group - The OMG does not have a Cloud effort proper, is my understanding. However, the NCOIC guys are having a "Cloud Interoperability Session" in DC which they approached the OMG to help them run, as OMG had a DC meeting coming up anyway.
• Open Cloud Consortium - The OCC was started by a group in Univ. of Illinios who are focused on large scale data mining and business intelligence problems. They are one of many Universities to leverage the National Lambda Rail project which is dark fiber which goes around North America to be used for high speed networking research. Cisco has created a 10G LAN infrastructure overlay on a wavelength on the NLR called C-Wave which OCC is using. Univ of Ill. have an open source cloud project called Sector with a distributed storage system called Sphere which they have placed on the C-Wave as a distributed cluster. They have done good work in researching more efficeint protocols for distributed fast high latency networks for which TCP is not great, their project is called UCI and is in wide use for these kinds of use cases.
• Open Grid Forum - Open Grid Forum has been around some time and is a formal standards body for development of grids and parallel programming models. I believe they have some realtionship with the Globus Alliance.
• Open Group - Open Group is the former X/Open, who now have enterprise software architecture tools and best practices and conferences. They have recently concentrated on SOA enablement for large enterprises and have an enterprise architecture called The Open Group Architecture Framework (TOGAF). Recnetly they have hosted speakers about Cloud Interoperability as Cloud and SOA from an enteprise perspective overlap.
• Storage Networking Industry Association - SNIA has an effort going to think about Cloud Storage standards