Cuneiform writing ranks among the largest bodies of ancient historical documentation. No attempt has hitherto been made to fully geomap this corpus. Combining philology, archaeology, and comparative linguistics, GLoW assembles and analyses a full digital record of this corpus drawing on recent advances in digital humanities. As a first quantifiable, comprehensive study of the cuneiform corpus, GLoW provides a benchmark example of applying digital and spatial computing tools to the study of early writing. Engaging with artifacts marred by years of recent conflict, it also serves as a key reference document for protecting part of the common heritage of humankind.