bitcoinarmory.com - old
btcarmory.com - new
use btcarmory.com
Is it only an old web page or is it the software as well?
bitcoinarmory.com was from Armory Technologies Incorporated. But Armory Technologies Incorporated has since discontinued development of Armory. Armory is now developed and maintained by goatpig, completely rewritten from scratch, which is released at btcarmory.com.
You can read about it here:
https://btcarmory.com/armory-future/