A Catalogue of Free/Open Source Software for Translators
From the project's web-site:
Poedit is cross-platform gettext catalogs (.po files) editor. It is built with wxWidgets toolkit and can run on any platform supported by it (although it was only tested on Unix with GTK+ and Windows). It aims to provide more convenient approach to editing catalogs than launching vi and editing the file by hand.
You can use Poedit to scan source code for translatable strings. Translation memory automates translation of frequent phrases. Poedit can reuse translation data from all your PO, MO and RPM files.