Language Translator
Translate a text or web page
Gtranslator
Translate and localize applications and libraries
Khmer Converter
Convert Khmer between Unicode and legacy Khmer encodings.
Lokalize
Debug sources for package lokalize
OmegaT
Computer-Assisted Translation tool

Virtaal
A translation tool to help a human translator translate files into other languages
gnome-transliteration
transliteration utility
ManEdit
UNIX Manual Page Editor
Translation Editor
Translate and localize applications and libraries