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 6.0
(in development)
|
GitHub (dev)
|
2023 |
Zip (dev) |
Readme (dev) |
19,008 |
NDR 6.0 (dev) |
NIEM 5.2
(current release)
|
GitHub |
release.niem.gov
|
2022 |
Zip |
Readme |
18,980 |
NDR 5.0 |
|
NIEM 5.1
|
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: