Below are lists of the current ACOnet Identity Federation member institutions, by use of the Technology Profiles (cf. Policies):

eduID.at

ACOnet Identity Federation members deploying the SAML WebSSO Technology Profile:
http://www.aco.net/federation_idps.html
http://www.aco.net/federation_sps.html 

eduroam

ACOnet Identity Federation members deploying the eduroam Technology Profile:
http://www.aco.net/eduroam.html