I'm the Technical Program Manager of CEDAR and BioPortal and the Stanford University Center for Biomedical Informatics Research (BMIR). CEDAR is a data management environment that lets users create and fill out semantic metadata forms, including using caDSR CDEs as fields in the metadata forms. BioPortal manages value sets for CEDAR's CDEs, as well as many hundreds of ontologies and vocabularies (including many UMLS vocabularies!) for biomedical and other related sciences.