Now, I just got aware of an updated v4.8.4 download source, so I'm posting it here for future reference (previously, there was only an obsolete v4.6.0 for Windows and MacOS at http://qt-apps.org/content/show.php/?content=89360, also referenced by Softpedia).
Qt Linguist is part of the multi-platform Qt Development Framework (currently at v5.3, see http://qt-project.org/). For a complete overview of the previous Qt Linguist (the one posted here), check http://qt-project.org/doc/qt-4.8/lingui ... ators.html. Plenty of mentions of the ".ts" Qt native translation format, but Qt Linguist can also easily read the ".po" format from POEdit (GNU Gettext), as well as ".xlf" XLIFF (XML) format files. INI formatted files can be converted with ini2po (http://translate-toolkit.readthedocs.or ... ni2po.html)...
BTW, Qt Linguist native ".ts" file format is documented at http://qt-project.org/doc/qt-4.8/lingui ... ormat.html and the Qt FAQ (http://qt-project.org/faq/answer/does_q ... he_widgets) states this:
In addition we provide the lconvert tool which can be used to create an empty translation file so you can add your own translation for the Qt strings in a language that we don't provide for. To do this do:
lconvert --drop-translations -o qt_untranslated.ts qt_fr.ts
and then it will give you an empty translation file with the Qt strings ready to be translated.
The only thing keeping Qt Linguist from being natively portable is the fact that it keeps its settings in the system registry at 'HKCU\Software\Trolltech\Linguist' (and also creates a file association at 'HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.qph'), both of which can easily be solved with a dedicated launcher.
Download Qt Linguist standalone latest version (v4.8.4) from http://sourceforge.net/projects/tht/files/Other/. This download exists thanks to the developer of the Trader's Home Task project at Sourceforge, a free financial trading OSS.
EDIT: a while ago, Photivo developer (may he be forever blessed for that) made available a package named 'translator-tools-win32.zip', including a non statically compiled Qt Linguist v4.7.0, plus the needed extra 'lconvert.exe' and 'lupdate.exe'; see http://photivo.org/development/translating...
EDIT2: yet another download source for an even more recent version -- each version of OpenOrienteering Mapper available for download from Sourceforge has also a 'translations' folder, where the latest Qt Linguist version is made available for download; no console tools included this time, but these versions have an extra printing capability; e.g., check for latest v5.3.1 at http://sourceforge.net/projects/oorient ... nslations/.