The authoritative dictionary of modern Danish, free, with audio and en/et marked.
Details
Published by the Society for Danish Language and Literature, DDO covers Danish from 1950 onward and is updated continuously, with pronunciation recordings, gender, inflection tables, real usage examples and idioms on almost every entry. For a learner the audio and the en/et marking alone justify making it your default lookup. It is Danish-to-Danish only, so beginners will still need a bilingual dictionary alongside it.