Quick Translator is the most lightweight and easiest translator. Translate between more than 90 languages with one click or a hot key. Translate from one word to a whole page.
QuickTranslator is handy little program you can use to perform translations.Support is offered for English, French, German, Spanish, Italian, Portuguese, Japanese, Chinese, Russian, Korean and Arabic.

Select the languages you're working with, and paste or type the text. One mouse click later, the text is translated.

The actual translation engine is online, so you'll need an active connection, but you won't have long to wait -- even lengthy paragraphs are returned in seconds.

QuickTranslator is an easy-to-use program that performs admirably and can be a great asset when dealing with foreign text, email, or even chat.