Navita is a free five language translator for your Blackberry. Its similar to bbtrans also made with a very simple interface. I don't know what translation engine they are using but it seems to be okay and fast enough. My officemate claims the German translation works well and is usable
Blackberry Language Translator is an easy-to-use on-line multi-translation application that helps users to translate words, phrases and does a dictionary lookup. BBTran supports more than 40 languages (Arabic, Chinese, Dutch, English, French, German, Greek, Italian, Japanese, Korean, Portuguese, Russian, Spanish etc
Dictionary.com app - The free Dictionary.com app for BlackBerry delivers trusted reference content from Dictionary.com and Thesaurus.com including more than 500,000 terms, definitions, and synonyms
ProTranslate Lite A simple user-friendly language translator for BlackBerry which uses Google's API. Use this translator to get quick translation from your language to other languages and express your mind. You can compose a mail and translate the mail in other language from this app. It's easy. Related ads are shown to support the development
Photo Translato Just take a picture of text in any language using your BlackBerry camera and Photo Translator will instantly capture the text and translate it.
It is incredibly useful in situations when quick translation is needed: in airports, train or bus stations, restaurants and many other places
