Comparison of Support among OpenID Providers

Gone as of December 2013

This page used to display a table comparing the OpenID protocol support by some of the more popular OpenID providers. The protocols this page tested for are all but dead at this point, and I haven’t maintained the list for several years now, so I’ve taken it down. You can find old cached versions in the Internet Archive.

If you are interested in the future of OpenID, see OpenID Connect.