NIEM 2.1 is a minor release, published September 2009.
Download the full release package as a zip file
Use the online Schema Subset Generation Tool (SSGT) to search or build XML schema subsets for use in IEPDs
Options in the menu bar to switch to the 2.1 release)
Download the component spreadsheet to explore the contents of NIEM 2.1 in Excel
See the NIEM 2.1 change log for a list of changes.
The following are the NIEM specifications that can be used with this release:
The NIEM Naming and Design Rules specifies the data model XML Schema components and XML data for use with the National Information Exchange Model (NIEM). Learn more...
The NIEM Conformance Specification introduces the idea of NIEM conformance and provides a general normative definition for its meaning, how it applies, and to what it does and does not apply. It describes the benefits of conformance, and refers to sources of information, tools, and help. Learn more...