OWLGrEd/CNL is a graphical editor for the Web Ontology Language (OWL) that supports editing ontologies in multiple controlled natural languages (CNLs) like English and Latvian. It combines a graphical notation based on UML with CNL verbalizations to help understand and check ontology semantics. Axioms and class expressions are translated between OWL, Attempto Controlled English as an interlingua, and target CNLs using Grammatical Framework grammars. The tool allows verbalizing specific parts of an ontology or the whole ontology in different languages. Future work includes improved support for object and data properties in CNLs.