The BitMinter miner
now has BFL support in the new beta version. Hopefully a tad bit faster than other miners due to faster work dispatch. Reported to run well on Windows and Mac. Still needs Linux testing!
It should also be able to run on ARM-based systems. I'd be especially interested to hear about this if you are able to test it.
Please try it and let me know how it runs. Just click the button to start (requires Java):
After starting it choose Devices->Probe all ports for FPGAs
in the pulldown menus.
If the BFL devices don't show up as serial (COM) ports on your OS, you may need to install drivers: http://www.ftdichip.com/Drivers/VCP.htm