NIEM artifacts are individual files or packages relating to NIEM releases or information exchanges.
Information about release-specific and IEPD-specific artifacts has moved to the Release Artifacts and IEPD Artifacts pages.
NIEM Code Lists are special files that support the use of enhanced code lists in NIEM, beyond the basic capabilities provided by XML and JSON schema enumerations.
A JSON-LD context file is a file that can be used to associate namespace prefixes with the full URIs that they represent.
An XML catalog is a XML document that assigns locations to files. This can be used to override the file locations assigned by NIEM XML schema import statements without having to modify the original schema itself.