- A browsable Multi-Schema Attribute Registry is under development as part of this project. The information is also available in the form of a spreadsheet and a Protégé ontology project.
- LoA Profile Registry
- Rutgers Identity Attribute Registry (PDF)
- R&S Category Bundle from InCommon
- SWAMID Entity Categories
- GPII (see ISO/IEC 24751 parts 1-3, at http://standards.iso.org/ittf/PubliclyAvailableStandards/index.html for their unbundled list)