This plugin allows you to write posts in more than one language, all you have to 
do is to add some divs to your posts, each div with a class, that is the 
language’s name. This way your readers will be able to just click in the flags 
and change between languages.

WPMultiLanguageChanger

This plugin allows you to write and you readers to change between languages in your blog in a easy way.

Global Translator can automatically translate your blog in the following 63 different languages: 
Afrikaans, Albanian, Arabian, Armenian, Azeri, Basque, Belarusian, Bosnian, Bulgarian, Catalan, Croatian, Czech, Chinese, Danish, Dutch, English, Estonian, Finnish, French, Galician, Georgian, German, Greek, Haitian (Creole), Hebrew, Hungarian, Icelandic, Indonesian, Irish, Italian, Japanese, Kazakh, Korean, Kyrgyz, Latin, Latvian, Lithuanian, Macedonian, Malagasy, Malay, Maltese, Mongolian, Norwegian, Persian, Polish, Portuguese, Romanian, Russian, Spanish, Serbian, Slovak, Slovenian, Swahili, Swedish, Tagalog, Tajik, Tatar, Thai, Turkish, Uzbek, Ukrainian, Vietnamese, Welsh.
Main features:
<ul>
<li>A NEW translation engine: it uses the Yandex Translate APIs, which provide a very high and proven quality on its translation. </li>
<li>Easy to configure: You just need to choose the translations to enable and to register your Yandex API keys and the plugin will automagically start translating your website!. </li>
<li>Search Engine Optimized: it uses the permalinks by adding the language code at the beginning of all your URI. 
For example the english version on www.domain.com/mycategory/mypost will be automatically transformed in 
www.domain.com/en/mycategory/mypost. 
It also automatically adds the “hfrelang” tags to your pages telling Google that it can serve that page to users searching in that language. </li>
<li>Fast Caching System: new fast, smart, optimized, self-cleaning and built-in caching system.</li>
</ul>
Global Translator is the first real (and free) traffic booster for your blog! 
It can help you to reach a lot of new users and consequently to strongly increase your popularity: if you derive some benefits and if you want to support the development, 
please consider to support it with a <a href="http://www.paypal.me/davidepozza" rel="nofollow ugc">donation</a>.

Global Translator

Automatically translates your blog in 63 different languages!

WPMultiLanguageChanger vs Global Translator