DER is a US-based distributor of documentaries whose mission is to promote thought-provoking documentary film and media for learning about the people and cultures of the world. The films can be searched by title, geographical area, or subject. The subject headings are helpfully specific such as Aging, Conflict Resolution, Immigration, Language and Communication. The collection is particularly strong in ethnographic film. Each entry carries a full synopsis, a list of related films where relevant and awards won. A streaming licence service is offered and there are links to film festivals. The company offers sponsorship to filmmakers whose work supports its aims.