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Open Call for Submissions - NIEMOpen Excellence Awards

NIEMOpen is recognizing the outstanding contributions of users and members who are transforming the information data sharing space. Complete a nomination form by June 30, 2025. Winners will be selected by the NIEMOpen Project Governance Board (PGB) and featured in a future press release.

Have you searched the NIEM Public IEPD / MEP Registry and Repository?

The NIEMOpen public IEPD/MEP Registry and Repository allows users to register IEPD/MEP's and promote re-use and collaboration. It includes over 200+ IEPDs/MEPs.  If you would like to share your IEPD or Message Exchange Package email, then Contact Us using the Contact link in the upper right hand corner of the page. Select 'Submit and IEPD/MEP' from the Inquiry Category drop-down menu.  Please provide a title, description, and website link.

What is NIEM?

NIEM offers 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

  • Announcing NIEMOpen Biometrics Town Hall Event

    The NIEMOpen Biometrics Subcommittee Executive Committee (NBSEC) is hosting a Virtual Biometrics Town Hall Event on August 29, 2024, from 8:00 AM to 10:00 AM EST. Please block your calendar and email OBIMFuturesIdentityNIEM@hq.dhs.gov to be added to the Biometrics member list and receive a calendar invite. The meeting will be accessible via the Microsoft Teams Links specified below. This event...

  • NIEMOpen Reveals Its Inaugural Summit

    Mark your calendars for a groundbreaking event that promises to redefine the landscape of international information sharing. NIEMOpen proudly announces its inaugural annual summit, the NIEMOpen Reveal, slated to take place from February 18th to 20th, 2025, at the prestigious National Press Club in the heart of Washington, D.C. At the core of the NIEMOpen Reveal lies the unveiling of...