A really simple to use plugin which provides support for additional languages for your pages and posts. Does not work with custom post types and some themes.
Adds title and content edit boxes for each additional language on edit pages for posts and pages. Translation indicator available for post list on admin panel (can be turned off).
Includes widget and shortcode to generate language selection.
When a language is selected, displays all pages, posts and menus based on selected language. Different actions for untranslated content available in the settings.

A Simple Multilanguage Plugin

Multilanguage support for pages and posts. Displays content based on selected language. Includes widget and shortcode for language selection.

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!

A Simple Multilanguage Plugin vs Global Translator