SimpleSAMLphp a long time ago contained both an OpenID Consumer and an OpenID Provider, the days when simpleSAMLphp was not modularized.
Then, there was a major upgrade of the OpenID Consumer part, where the code was modularized and updated. The Provider part then disappeared…
Now, Olav brough back the OpenID Provider, in a fresh re-written modularized form.
The code is available in subversion, and will be part of the 1.5 release later this month. Please start testing it and report any problems.
May be it is time for us to re-launch our experimental Feide OpenID Service?