LXVII (pronounced "67") is a faithful simulation of the Hewlett-Packard HP-67 calculator for Mac OS X. Among its many features are:
PINCHIES Thankyou!!! :) I love my HP-67 and can now take it with me! (Version 1.1.2)
M!K3 Is there something similar for the HP48 available? (Version 1.1.1)
FREEBSD you can dig up the x48 program that might still be available on hpcalc.org for Mac OS X.
This is a nice program too, by the way.
If you want to give x48 a much needed update, I'd be very interested as well. (Version 1.1.1)