So far, only the English language packs (for both, backend and frontend) are shipped with JWallpapers.

The following translation files, provided by subscribers, are available at the JWallpapers translations forum (only available for active subscribers):

• Spanish (frontend and backend v1.3)
• Italian (frontend only v1.3)
• Swedish (frontend only)
• Dutch (frontend only)

However, adding a new language is quite easy. You'll only need to translate two files, one for the frontend interface and another one for the backend. No source code modification is required. A complete guide explaining the whole process of creating translation files is available in a JWallpapers Knowledge Base (KB) article.