Abstract. This demo proposal aims at providing support for the localization of ontologies, and as a result at obtaining multilingual ontologies. We briefly present an advanced version of LabelTranslator, our system to localize ontology terms in different natural languages. The current version of the system differs from previous works reported in [1, 2] in that it relies on a modular approach to store the linguistic information associated to ontology terms. Additionally, it uses a synchronization method to maintain the conceptual and linguistic information updated.