See Card Library for a spoiler list.

Eotslist.xls - EOTS Collector's Card list. Excel format. 110k. File created by Mark Hadfield of House Arafel.

Jotclist.xls - JOTC Card list. Excel format.  69k. 
Jotclist.txt - Judge of the Change card list in ASCII format. 10k.

Tatlist.xls - Thunder at Twilight Card List. Excel Format. 42k

AllSets.xls - Collector's list of all Dune sets. Contains card names in alphabetical order plus rarities. Excel Format. 54k. Thanks to Michael J. Botello for the creation of the list.

Preview.doc - Michael B. Rose collected a list of the cards from the preview set, the set of cards released before the game even went retail. There are a couple of them in the Images section.