Entrans is an online, collaborative translation tool that
can be used for the translation of PO (Portable Object)
files. Entrans was developed with Indic community in mind
and has features, like built-in input editor, that make the
translation job a lot easier for Indic translators.

Some of the other useful features include

    * Simple and easy to use interface
    * User account management
    * Multiple levels of user roles for different task allocation
    * Seamless reuse of translations
    * Search and lookup
    * Navigation through untranslated strings
    * Header editing option
    * Vote for translations
    * Machine translation and transliteration
    * Upload files as compressed archives of PO files
    * Upload files through URLs

WWW: http://entrans.sourceforge.net/