The Research Data Archive hosts a permanent archives of IDD global observational data and gridded model data on NCAR's Mass Storage System.

A short-term data archive hosted on Unidata's motherlode data server contains both raw and decoded IDD data.

Much of the realtime data available over the Unidata Internet Data Distribution (IDD) is available via the THREDDS Data Server on Unidata's motherlode data server.

The goal of the Thematic Realtime Environmental Distributed Data Services (THREDDS) project was to provide metadata and access to real-time and archived scientific datasets from a number of distributed data sources. The project achieved its goal in the web-based THREDDS Data Server.

The Tropical Cyclone version of the IDV was jointly developed by the Unidata Program Center and the Shanghai Typhoon Institute (STI). An outgrowth of this work is the ability to display and analyze the Automated Tropical Cyclone Forecasting (ATCF) data from the National Hurricane Center in the IDV.

In a 2011 whitepaper titled Towards Open Weather and Climate Services, the Environmental Information Services Working Group (EISWG) of the NOAA Science Advisory Board proposed that the National Weather Service begin working toward an “Open Weather and Climate Services” (OWCS) paradigm. The working group identified the expansion of access to data collected and created by the NWS as one of the principal benefits of the OWCS approach.

As of June 2014, the National Weather Service ended the OWCS program, and began soliciting information from the community on how to proceed in providing additional NWD model output. See this blog post for more information.

Unidata and NCSA collaborated to combine the netCDF interface with the HDF5 format in order to create and deploy software that will take advantage of the widespread use and simplicity of netCDF and the generality and performance of HDF5. The result of this project was the creation of netCDF-4, which can be utilized in high performance computing scenarios, such as parallel I/O.

The netCDF CF Library, or libCF, uses the netCDF API to aid in the creation, processing and sharing of scientific data files which conform to the Climate and Forecast (CF) convent

The Collaborative Radar Acquisition Field Test (CRAFT) project was tasked with creating access and distribution of NEXRAD Level II data, in near-real time. Level II NWS NEXRAD (Next Generation Radar) WSR-88D radar data is now available via the Unidata IDD.

The goal of the OPeNDAP and NetCDF Integration project aims to integrate the OPeNDAP software and Data Access Protocol (DAP) with Unidata's netCDF library. The result of the project was the creation of the netCDF library with bundled DAP support - which means any software that uses the library can now read from any type of DAP server (not only the server developed by OPeNDAP).