We got a product called Just Whites, am thinking it didn't have any sodium and wasn't processed at all. It came in a carton too, and was pretty good. Don't know why we haven't gotten it recently.
I found the new ones: All Whites: 75 mg sodium Better 'n Eggs: 120 mg sodium...much lower than Egg beaters!
Had to look through 5 magazines to find the ad I saw for the name...