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NSF Unidata

Our mission is to transform the geosciences community, research, and education by providing innovative data services and tools.
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What is NSF Unidata?

U.S. National Science Foundation Unidata is a diverse community of education and research institutions with the common goal of sharing geoscience data and the tools to access and visualize that data. For more than 35 years, NSF Unidata has been providing data, software tools, and support to enhance Earth-system education and research. Funded primarily by the U.S. National Science Foundation, NSF Unidata is one of the University Corporation for Atmospheric Research (UCAR)'s Community Programs (UCP).

NSF Unidata's GitHub repositories contain code for software projects created or maintained by developers at the NSF Unidata Program Center. We actively encourage contributions to these projects in the form of issues and pull requests.

Participant Code of Conduct

If you're interested in contributing, please take a look at NSF Unidata's Contributor Code of Conduct.

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  1. netcdf-c netcdf-c Public

    Official GitHub repository for netCDF-C libraries and utilities.

    C 589 290

  2. netcdf-java netcdf-java Public

    The Unidata netcdf-java library

    Java 190 82

  3. LDM LDM Public

    The Unidata Local Data Manager (LDM) system includes network client and server programs designed for event-driven data distribution, and is the fundamental component of the Unidata Internet Data Di…

    C 49 29

  4. MetPy MetPy Public

    MetPy is a collection of tools in Python for reading, visualizing and performing calculations with weather data.

    Python 1.4k 445

  5. awips2 awips2 Public

    Weather forecasting display and analysis package developed by NWS/Raytheon, released as open source software by Unidata.

    Java 214 81

  6. IDV IDV Public

    The Integrated Data Viewer (IDV) from Unidata is a framework for analyzing and displaying geoscience data.

    Java 90 38

Repositories

Showing 10 of 141 repositories
  • usg-devops Public
    Unidata/usg-devops’s past year of commit activity
    Nushell 0 BSD-3-Clause 2 0 0 Updated Apr 7, 2026
  • netcdf-c Public

    Official GitHub repository for netCDF-C libraries and utilities.

    Unidata/netcdf-c’s past year of commit activity
    C 589 BSD-3-Clause 290 272 24 Updated Apr 7, 2026
  • tds Public

    THREDDS Data Server

    Unidata/tds’s past year of commit activity
    Java 79 BSD-3-Clause 28 31 (1 issue needs help) 1 Updated Apr 7, 2026
  • awips2 Public

    Weather forecasting display and analysis package developed by NWS/Raytheon, released as open source software by Unidata.

    Unidata/awips2’s past year of commit activity
    Java 214 MIT 81 83 0 Updated Apr 7, 2026
  • LDM Public

    The Unidata Local Data Manager (LDM) system includes network client and server programs designed for event-driven data distribution, and is the fundamental component of the Unidata Internet Data Distribution (IDD) system.

    Unidata/LDM’s past year of commit activity
    C 49 29 46 2 Updated Apr 6, 2026
  • MetPy Public

    MetPy is a collection of tools in Python for reading, visualizing and performing calculations with weather data.

    Unidata/MetPy’s past year of commit activity
    Python 1,407 BSD-3-Clause 445 319 (11 issues need help) 43 Updated Apr 6, 2026
  • cftime Public

    Time-handling functionality from netcdf4-python.

    Unidata/cftime’s past year of commit activity
    Python 92 MIT 44 15 (1 issue needs help) 2 Updated Apr 6, 2026
  • siphon Public

    Siphon - A collection of Python utilities for retrieving atmospheric and oceanic data from remote sources, focusing on being able to retrieve data from Unidata data technologies, such as the THREDDS data server.

    Unidata/siphon’s past year of commit activity
    Python 240 BSD-3-Clause 73 70 (2 issues need help) 13 Updated Apr 6, 2026
  • MetPy-benchmark Public

    Benchmarks for the MetPy project

    Unidata/MetPy-benchmark’s past year of commit activity
    1 MIT 2 0 0 Updated Apr 4, 2026
  • netcdf-java Public

    The Unidata netcdf-java library

    Unidata/netcdf-java’s past year of commit activity
    Java 190 BSD-3-Clause 82 78 (2 issues need help) 1 Updated Apr 3, 2026
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