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http://www.internet2.edu/grouper/
Grouper makes groups
based on URN namespaces to make sure group names don't collide
main objective is large scale admin and delegation of a common store
many people have authority over many other people's information
all those different agencies can source a knowledge system based on a common service that many agencies can plug into

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National Cancer Institute, 80 Cancer research centres is federated and uses PKI, Grouper is the access management component.
- Central group registry and most sites have their own, but it provides a way for you to link your app to their grid while maintaining access
U of Chicago uses it to solve ordinary use cases, over time you amass a new asset of who can access what, provides an alternative to creating application level access control
Brown and Duke both have large, mature deployments
Brown first ones to address a course management problem WRT the fact that the SIS doesn't provide a complete picture of TAs etc. Grouper fills that gap.
Dutch organization is providing access control to a variety of services for multiple government agencies
French team is using Grouper and uPortal to solve issues around there portal for many French schools. Create dynamic groups based upon LDAP attributes because doing so on the fly was too much load on LDAP. Async into Grouper from LDAP when attributes show up then pull the info from Grouper into uPortal.
University in the Czech Republic built a Grouper based extension to their Sun Identity Manager which they would like to contribute back.

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