QTranslate
Translate text across Windows with handy hotkeys
QTranslate is a free Windows translation utility designed for everyday reading, writing, and language lookup tasks. Its main appeal is that it works across the desktop, so you can select text in a document, browser, or other selectable text field and call up a translation without switching your workflow too much.
The app supports full text translation as well as single word lookup, making it useful for both quick comprehension and vocabulary building.