The 4.0.16 version of Maltego XL is provided as a free download on our website. Maltego XL lies within Development Tools, more precisely Database Tools. This software was originally designed by Paterva.
From the developer:
Maltego XL (eXtra Large) is the premier edition of the three Maltego clients; it includes all the capabilities and features of Maltego Classic but with enhanced capability of working with extremely large graphs.
You may want to check out more software, such as XL Share Board, XL Delete or Advanced XLS Converter, which might be related to Maltego XL.