Gtranslator

Gtranslator is a specialized computer-assisted translation software and po file editor for the internationalization and localization (i18n) of software that uses the gettext system. It handles all forms of gettext po files and includes features such as Find/Replace, Translation Memory, different Translator Profiles, Messages Table (for having an overview of the translations/messages in the po file), Easy Navigation and Editing of translation messages and comments of the translation where accurate. Gtranslator includes also a plugin system with plugins such as Alternate Language, Insert Tags, Open Tran, Integration with Subversion, and Source Code Viewer.
Gtranslator is written in the programming language C for the GNOME desktop environment. It is available as free software under the terms of the GNU General Public License (GPL).