COREX is the CORpus EXploitation software by means of which the Spoken Dutch Corpus (CGN) can be exploited. The software is distributed with the corpus. The user of the COREX program can listen to the speech files, view the multiple annotations and conduct searches in the corpus. COREX supports easy navigation through sub corpora, either based on predefined or user defined metadata groupings, such as the speaker’s sex and age and many other metadata. The speech signal can be played in synchronisation with the display of the annotation data. Queries for tokens as well as statistical queries can be conducted in the annotation data.