Better PO Editor is an editor for .po files, used to generate compiled gettext .mo files which are used by many programs and websites to localize the user interface. It offers great features... It's worth to give it a try!
PLEASE NOTE: the project moved to GitHub: see https://github.com/mlocati/betterpoeditor/releases
Property File Editor that stores Property Strings in HTML. Scans Java source for "getString"-calls and assigns them to properties. Scans existing property files and displays overview of translation. All input Strings are converted to HTML.