Hi Mauro and Anh,
It is possible to display international (i.e. English) and localised (e.g. Arabic) names using OSM although it requires a custom tile server like:
https://tile.iosb.fraunhofer.de//#map=10/30.9482/34.048/3
Obviously MetaBox cannot provide this level of customisation, but it shows that OpenStreetMap can (and should) provide this functionality natively.
Thanks