Transposh

Transposh translation filter for WordPress offers a unique approach to blog translation. It allows your blog to combine automatic translation with human translation aided by your users with an easy to use in-context interface.

You can watch the video above, made by Fabrice Meuwissen of obviousidea.com which describes basic usage of Transposh, more videos can be found in the changelog

Transposh includes the following features:

• Support for any language – including RTL/LTR layouts • Unique drag/drop interface for choosing viewable/translatable languages • Multiple options for widget appearances – with pluggable widgets and multiple instances • Translation of external plugins without a need for .po/.mo files • Automatic translation mode for all content (including comments!) • Professional translation bt One Hour Translation • Use either Google, Bing, Yandex or Apertium translation backends – 117 languages supported! • Automatic translation can be triggered on demand by the readers or on the server side • RSS feeds are translated too • Takes care of hidden elements, link tags, meta contents and titles • Translated languages are searchable • Buddypress integration