Also check out Product Search Results
and choose "low protein" or "protein-free." I know they are always looking for more reviews, so you could add to the protein-free product list there.
For a list of proteins, do a search in the upper box (esp articles) or visit Live Curly Live Free - Product Ingredients
(there are more than these, though). It is nice to have a list like this open or printed out while shopping.
Looking forward to Y'all's links.