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Download the Message Exchange Package (MEP) Builder

The Message Exchange Package (MEP) Builder v1.0.1 is NIEM's latest open-source tool offering.  Trainees at the March 2022 NIEM Technical training were the first audience to receive a demo and now you can too.  The MEP Builder is now available for download.

Technical Training Registration Now Open For June 14-16

Come join our resident expert Tom Carlson for a deep-dive into NIEM. This 3 day course is geared toward NIEM developers and implementers. Registration for the June class is now open. This class is held from 1:00 to 5:00 PM ET daily. The class is free to the public, but spaces are limited. Get all the details at the registration site.

NIEM 5.1 Minor Release Now Available For Download

The NIEM 5.1 minor release  is available for download. Minor releases allow for domain-related content changes only.  The NIEM Core and Architecture are updated during major release which occur on a 3 year cycle. 

What is NIEM?

NIEM is a common vocabulary that enables efficient information exchange across diverse public and private organizations. NIEM can save time and money by providing consistent, reusable data terms and definitions, and repeatable processes.

Learn More

Download Current Release

Check out the latest version and release history on our Github.

Explore Training

Providing our developer community with resources to help use NIEM.

View Success Stories

Participating organizations & agencies leveraging the power of NIEM.

Browse Tool Catalog

An inventory of tools to support developers and implementers alike.

Latest News

  • NIEM Unveils new Message Exchange Package Builder

    The NIEM Management Office unveiled a new Message Exchange Package (MEP) Builder tool on Thursday, March 17th at the NIEM Technical Deep-Dive training session. The MEP Builder is an open-source tool that was built with the NIEM IEPD lifecycle in mind. “We want to simplify the process to build NIEM message specifications, formerly referred to as IEPDs, and have a...

  • NIEM Technical Deep-Dive Distance Learning Registration Open for April

    The NIEM Management Office (NMO) is pleased to announce that we will be hosting a 3 half-day training session beginning on April 12, 2022. This 3 day course is open to the NIEM community. This class was designed with NIEM developers and implementers in mind. If you or your team have been looking for free NIEM technical training, now is...

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