There are dozens of machine translators on the web, but probably none of them is as used as Google Translate. This does not necessarily mean that this machine translation is the best one created, but it is a good choice for someone who is looking for a free translator. Of course, we should always bear in mind that a machine is never as precise as a human, so we can never totally rely on the translation given. There are always quite a lot of mistakes, especially in long sentences and texts.
To begin with this article, I think it is quite interesting to know a little bit more about machine translation, so before continuing reading, you should take a look at this article I wrote some time ago. As I assume that you already know a little bit about machine translation, I will start talking about Google Translate.
WordReference is a free online dictionary used by thousands of people all around the world as it involves some of the most important languages in the world: English, Italian, Spanish, French and Portuguese. They are divided into the pairs English-French, English-Italian, English-Spanish, Spanish-Portuguese and English-Portuguese.
Although it might seem that these are not many languages, in fact French, Italian, Spanish and Portuguese represent around 93% of the Romance language speakers in the world, which, as far as I am concerned, is quite a lot.
In 2009, more language pairs were added: English-German, English-Russian, English-Romanian, English-Polish, English-Czech, English-Greek, English-Turkish, English-Chinese, English-Japanese, English-Korean and English-Arabic, but they are still in progress of being finished.