I'm looking for a unusual OAI endpoints (different implementations, different metadata schemes or extensions to schemes, different structures, unusual content types, etc) to test against. I'm aware of the list a couple of mainstream lists of which http://www.base-search.net/about/en/about_sources_date_dn.php?menu=2 is the most comprehensive the and the live demos of dspace, eprints and fedora. But I'm looking for more obscure installs and corner cases.
Does anyone know of any other candidates? Implementations known to be buggy, broken or dubious especially welcome :) I'll publish a list of endpoints I find useful. cheers stuart