poedit | cross-platform gettext catalog editor | Mehr ...
Generator for po to mo. It is built with wxWindows toolkit and can run on Unix or Windows. . It aims to provide convenient way of editing gettext catalogs. It features UTF-8 support, fuzzy and untranslated records highlighting, whitespace highlighting, references browser, header editing and can be used to create new catalogs or update existing catalogs from source code with a single click.