Are you tired of having to download different shareware versions of on-line dictionaries in various languages? Now you have the chance to download GoNaomi Dictionary, which is free and has the advantage of being many dictionaries in one, with up to 550.000 words.
It is more, making combinations between languages that you can choose, translating in up to one hundred languages, among which are: Polish, Chinese, Arabic, Japanese, English, Russian, Irish, Italian, German, Spanish, French, etc.
Obviously if you want to learn multiple languages at the same time (from the most common to those that are less so) GoNaomi Dictionary is the tool you need.