This module improves support for multilingual content in Drupal sites:

• Shows content depending on page language.
• Handles multilingual variables.
• Extended language option for chosen content types. For these content types transations will be allowed for all defined languages, not only for enabled ones.
• Provides a block for language selection and two theme functions: i18n_flags and i18n_links.

This is the base module for several others adding different features:

• Multilingual menu items.
• Multilingual taxonomy adds a language field for taxonomy vocabularies and terms.

For more information, see the online handbook entry for Internationalization module.