XCTU is a free multi-platform application designed to enable developers to interact with Digi RF modules through a simple-to-use graphical interface. It includes new tools that make it easy to set-up, configure and test XBee® RF modules.
Last old-gen version of XCTU: Contains features from previous versions, plus adds support for XBee Wi-Fi modules, Compatible with Windows 2000, XP, 2003, Vista, 7. Does not support the Digi XLR PRO.