The crackers I ate last time I was off gluten were Mary's Gone Crackers - Original. In fact, I still had some left in my pantry. I pulled them out to check and see if they would work.
But no - they contain soy (tamari for flavoring) I tried to look through their site to see if any of their varieties of gluten-fre crackers were also soy-free, dairy free but it was hard to navigate through. I guess I will try to take a look next time I am in the store. Unfortunately, I still have 1.5 boxes of these that I can't eat.