gtranslator is an enhanced gettext po file editor for the GNOME2
desktop environment. It handles all forms of gettext po files like
compiled gettext po files (gmo/mo files), compressed po files
(po.gz/po.bz2 etc.) and features many comfortable everyday usage
features like Find/Replace, Auto Translation, Message Translation
Learning, Messages Table (for having an overview of the
translations/messages in the po file), Easy navigation and editing
of translation messages & comments of the translation where accurate.
It has got really very much to offer therefore you should simply
test it and be happy with it!