Free IdP that supports subject role management?

I have had initial success migrating my webapp to support SAML2 using spring-security-saml2-core and ssocircle as IdP. Thanks for a terrific project.

I now need to be able to create roles and assign them to subjects within the IdP. This is not supported for the free hosted offering by ssocircle. Can any one suggest an alternative IdP (hosted or otherwise) that is supports role creation and assignment to subjects in addition to basic features available in the ssocircle hosted product. Thanks for your help.