A repository for various governmentwide classification systems and related ontologies
- Federal Enterprise Architecture (FEA) Business Reference Model (BRM)
- OMB A-11 Exhibit 79a Federal Budget Data System
- OMB A-16 National Geospatial Data Asset (NGDA) Themes
- Statistical Abstract of the United States
- Superintendent of Documents (SuDocs) Classification Scheme
- USA.gov Services and Information
- Simplified and Consolidated USG Taxonomy (Proposal)