The CTLO (Centre “Traditio Litterarum Occidentalium”) is Brepols’ in-house Digital Humanities lab that develops and produces the full-text and dictionary databases on the Brepolis platform, for Latin and, to a lesser extent, for other ancient languages. In doing so, it continues and expands the activities of the former Cetedoc at the Université Catholique de Louvain in Louvain-la-Neuve.