UDFR

Unified Digital Formats Registry (UDFR) is a registry (funded by the Library of Congress and developed by California Digital Library) designed to unify the function and holdings of two existing registries: PRONOM and GDFR (the Global Digital Format Registry). UDFR provides an open source, semantically enabled, community supported platform for a reliable, publicly accessible, and sustainable knowledge base of file format representation information for use by the digital preservation community.