Here's a script that builds an "offline database" (text file) containing mac-address, hostname and operating system of each wifi client.
https://github.com/bot779/ruckusconf/...
Each time the script is run, it adds the currently associated clients to the database.
I'm not sure that's what you're looking for.
It's not integrated w/ a GUI, but it is useful for certain commandline / scripted uses.