Ultima VIII - Pagan

Pentagram - http://pentagram.sourceforge.net/
Open source recreation of the engine for use on modern operating systems.

The Complete Guide to Ultima VIII: Pagan - http://www.pdragon.net/u8.html
Walkthrough with creature, spell, and item lists.

Things Your Mother Never Told You About Pagan - http://lightning.prohosting.com/~jpmorris/ultima8.htm
Screenshots and information.

Ultima VIII: Pagan - http://www.uo.com/archive/ultima8/index.html
FAQs, walkthroughs, music, screen shots, and patches.