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  Google Translate

  http://translate.google.com.br

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  Word Reference

  Free online dictionaries - Spanish, French, Italian, German and more. Conjugations, audio pronunciations and forums for your questions.
  http://www.wordreference.com

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  Babylon.com

  Babylon translator and dictionary for PC and Mac is the world's leading translation software, providing instant translation in over 77 languages
  http://www.babylon.com

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  Duolingo

  Learn languages completely free, without ads or hidden charges. It's fun, easy, and scientifically proven.
  http://www.duolingo.com

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  Reverso

  Reverso.net : Free online translation in French, Spanish, Italian, German, Russian, Portuguese, Hebrew, Japanese, English.
  http://www.reverso.net

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  Babbel

  Babbel is the new way to learn a foreign language. The comprehensive learning system combines effective education methods with state-of-the-art technology. I...
  http://www.babbel.com

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  Memrise

  The Memrise community uses images and science to make learning easy and fun. Learn a language. Learn anything.
  http://www.memrise.com

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  translate.google.com

  Google's free online language translation service instantly translates text and web pages. This translator supports: English, Afrikaans, Albanian, Arabic, Ar...
  http://translate.google.com