Microsoft® DreamSpark™

InCommon® federation (operated by Internet2), USA

UK Access Management federation, United Kingdom

SWAMID federation, Sweden

University of Texas System

Texas A&M University

Massachusetts Institute of Technology

California Institute of Technology

University of Washington

Andrew Mellon Foundation

Thomson Corporation

Mondo SAKAI Site, Sweden

Roundup JIRA Site, Sweden

Shibboleth Site, Internet2

TestShib Site, Internet2

GridShib Service, NCSA, University of Illinois

Any OpenID Site