gettext -- www.gnu.org/software/gettext/
Lokalize -- userbase.kde.org/Lokalize
poEdit -- www.poedit.net/
Virtaal -- www.virtaal.org/
OmegaT -- www.omegat.org/omegat/omegat_en/omegat.html
gtranslator -- gtranslator.sourceforge.net/
Emacs with po-mode.el -- www.gnu.org/software/emacs/
vim with po.vim -- www.vim.org/
sendpo.sh -- translationproject.org/extra/sendpo.sh
wyslij-po -- puszcza.gnu.org.ua/software/wyslij-po/
GNOME -- developer.gnome.org/projects/gtp/
KDE -- i18n.kde.org/translation-howto/
(Last updated on 2010-05-06 12:12 +0200.)
Your comments are welcome.