NIEM Releases

The NIEM 5.2 alpha 1 draft is now available for review!

Feedback is requested by end of the day on Friday, August 26, 2022. See the NIEM 5.2 info page in this section for more.

NIEM publishes annual releases on a 3-year cycle. A major release one year will be followed by minor releases the next two years.

Major releases allow content changes to NIEM Core and domains, plus architectural changes as specified by the NIEM Naming and Design Rules. Minor releases allow for domain-related content changes only; Core and the architecture remain fixed.

NIEM release packages are available on both GitHub and release.niem.gov (the original publication site).

Please submit feedback to the NIEM releases issue tracker (see info for help).

Release Schemas and Documentation Year Zip Info Elements NDR
NIEM 5.2 alpha 1
(under development)
GitHub 2022 Zip Readme 18,992 NDR 5.0
NIEM 5.1
(current release)
GitHub | release.niem.gov 2021 Zip Readme 12,976 NDR 5.0
NIEM 5.0 GitHub | release.niem.gov 2020 Zip Readme 12,163 NDR 5.0
NIEM 4.2 GitHub | release.niem.gov 2019 Zip Readme 11,520 NDR 4.0
NIEM 4.1 GitHub | release.niem.gov 2018 Zip Readme 11,328 NDR 4.0
NIEM 4.0 GitHub | release.niem.gov 2017 Zip Readme 11,087 NDR 4.0
NIEM 3.2 GitHub | release.niem.gov 2016 Zip Change log (xlsx) 10,484 NDR 3.0
NIEM 3.1 GitHub | release.niem.gov 2015 Zip Change log (xlsx) 8,705 NDR 3.0
NIEM 3.0 GitHub | release.niem.gov 2013 Zip Change log (xlsx) 8,224 NDR 3.0
NIEM 2.1 GitHub | release.niem.gov 2009 Zip Change log (html) 5,965 NDR 1.3 +
supplement
NIEM 2.0 GitHub | release.niem.gov 2007 Zip Change log (html) 4,232 NDR 1.3
NIEM 1.0 GitHub | release.niem.gov 2006 Zip 4,185

There are also online tools available to search and view NIEM release content: