| NIEM technical references | https://reference.niem.gov/ | latest versions | 
    
      | All NIEM technical references | https://reference.niem.gov/niem/ | includes legacy versions | 
    
      | NDR Schematron rules | https://reference.niem.gov/niem/specification/naming-and-design-rules/3.0/niem-ndr-3.0.zip | use w/ oXygen or XMLSpy | 
    
      | NIEM 2.1 UML profile | http://www.omg.org/spec/NIEM-UML/1.0/ | for NIEM 2.1 only | 
    
      | NIEM 3.0 UML profile | http://www.omg.org/spec/NIEM-UML/3.0/Beta1/ | NIEM 3.0, 3.1, 3.2 | 
    
      | Conformance Specification v3.0 | https://reference.niem.gov/niem/specification/conformance/3.0/ |  | 
    
      | Naming and Design Rules (NDR) v3.0 | https://reference.niem.gov/niem/specification/naming-and-design-rules/3.0/ |  | 
    
      | Conformance Targets Attribute Specification v3.0 | https://reference.niem.gov/niem/specification/conformance-targets-attribute/3.0/ |  | 
    
      | Code Lists Specification v1.0 | https://reference.niem.gov/niem/specification/code-lists/ |  | 
    
      | Model Package Description (MPD) Specification v3.0.1 | https://reference.niem.gov/niem/specification/model-package-description/3.0.1/ |  | 
    
      | High Level Version Architecture v3.0 | https://reference.niem.gov/niem/specification/high-level-version-architecture/3.0/ |  | 
    
      | Change request v1.0 | https://reference.niem.gov/niem/resource/change-request/ |  | 
    
      | Wantlist schemas (all versions) | https://reference.niem.gov/niem/resource/wantlist/ |  | 
    
      | Model schemas v1.1 | https://reference.niem.gov/niem/resource/model/1.1/ |  | 
    
      | NIEM Configuration Control Tool (NCCT) User Guide v1.0 | https://reference.niem.gov/niem/guidance/ncct-user-guide/1.0/ |  |