CleverTranslate - CleverTrasnaltor is a simple translator based on Microsoft Translator and Google Translation API. It requires internet connection to work. It works with more than 30 languages and allows you to choose translation provider
One2one - Description
Ortsbo's one2one is an easy but powerful tool that any traveler can't be without. One2one allows you to have a one device conversation with someone seamlessly in over 50 languages
TravelTranslator - Travel Translator converts text from one of 30+ languages to another.
Some common phrases and map included.
Locale dependent software or hardware keyboard needed for some languages for input
Translator 7, a universal translator for Windows Phone 7 can translate words, phrases, and even sentences in 16 different languages. It becomes a perfect app, provided you travel a lot, live in a multicultural region or just willing to learn new languages. Includes text-to-speech feature
MDict - This is the first Windows Phone application from TMA Mobile Solutions.
With TMA mDict, you are free to access 8 different dictionary types. mDict also provide bilingual support (English and Vietnamese)