Moltosenso is multiplatform tool that might be useful. The base edition is free; features like scripting are available in the premium packages.
Moltosenso's description from their web page:
moltosenso Network Manager™ IRON is the cross-platform answer for the users of Digi International® X-CTU™. The same functionalities are now available on Microsoft Windows®, Linux® and Mac OS X™ operating systems.
Thanks to a snappy and totally free GUI, moltosenso Network Manager™ IRON is able to grant:
- get/set of the parameters of Digi International® modules plugged to the PC, both in API and AT mode;
- get/set of the parameters of Digi International® modules remotely addressable;
- an effective graphic test for RSSI parameter, especially tailored for XBEE™ modules;
- firmware upload (local and - where available - remote) for many supported Digi International® modules.