I just created a multi terminal application that allows you to connect to many remote serial terminals on XBee clients at the same time, with a single coordinator.
It's a first release, but mostly functional. Hopefully someone finds it useful. If there's any features or changes you would like to see, let me know and I will see if I can get it into a next release.
Check it out over at GitHub - https://github.com/reasyrf/XBeeMultiTerminal