Plumtree 4.5 supports 10 languages. PortalBuilder supports 13 languages and many regional variations on languagesUK English, US English, Mexican Spanish, and so on.
PortalBuilder has extensive localization features, providing an architecture that makes it possible to have different look-and-feel templates for the various languages supported by one e-portal, as well as different ways of determining which locale (language/character-set combination) is to be used for a particular user. The locale automatically determines the language used in all Yahoo! content modules.