Linguee it!

A firefox extension that displays words and sentences translation using Linguee^TM.

You don't need to quit the website you are working on;
Zero configuration, languages are automatically detected.

Changelog

0.3.1

Better layout;
Support for Firefox 50.0.

0.2.0

Display result into the browser action instead of a new tab;
Use proper URL (auto detecting page and user language).

0.1.0

First release.