You can manage and edit all gettext translation files (.po/.mo) directly out of your WordPress Admin Center without any need of an external editor, it automatically detects the gettext ready components like WordPress itself or any plugin/theme supporting gettext.
Also it is able to scan the related source files and can assists you using Google Translate API or Microsoft Translator API during translation. This plugin supports WordPress MU and allows explicit WPMU Plugin translation too. It newly introduces ignore-case and regular expression search during translation. BuddyPress and bbPress as part of BuddyPress can be translated too. Produces transalation files are 100% compatible to PoEdit.