Quick Localisation allows site admins to patch WordPress translations of any theme and any plugin without leaving the control panel
Drag and Drop interface. Tens of predefined fields, including Connect with Facebook and Google+. 37 languages. Responsive design. Double opt-in.
Allows to use both "old" cyrillic and "new" latin slugs at the same time. Now it works for terms (tags and categories slugs) too.
RSS link for this tag.