Some are free, some aren't. I think the translation cards are definitely worth paying for, especially if you are heading somewhere like China or Japan and don't speak the language (or know the characters of the language).
- Food Allergy Restaurant Cards from AChoo!
- Food and Travel Translation Cards from Select Wisely
- The FAAN Chef Card Template (Free)
- FanKid Chef Card Template (Variation of the FAAN Card above; also Free)
- UK Food Standards Agency Card (Free)
- Allergy Translation
- Menu Data (Free, but you have to register)
- Allergy Dictionaries (free - this is a nice list of allergy related words for almost every language you can imagine)