LOM-GR, also known as "LOM-GR "Photodentro"" is the Greek LOM application profile for educational resources, currently being used for resources related to school education. It was published in 2012 and is currently available in Greek and English. It is maintained by CTI DIOPHANTUS as part of the "Photodentro Federated Architecture for Educational Content for Schools" that includes a number of educational content repositories (for Learning Objects, Educational Video, and User Generated Content) and the Greek National Aggregator of Educational Content accumulating metadata from collections stored in repositories of other organizations. LOM-GR is a working specification of the TC48/WG3 working group of the Hellenic Organization for Standardization.