GermaNet

GermaNet shares much in common with the English WordNet and can be viewed as an online thesaurus or a light-weight ontology.

[2] GermaNet has been developed and maintained at the University of Tübingen since 1997 within the research group for General and Computational Linguistics.

[3] GermaNet partitions the lexical space into a set of concepts that are interlinked by semantic relations.

[6][7] These programs are distributed under free-software licenses and provide easy access to all information in various versions of GermaNet.

It features visualizations of the hypernym relation and advanced filtering options for synset searching.