Rated 5 out of 5 stars

per mnemiopsis el jun. 29, 2011 · enllaç permanent

Essential for my work.
Important remark: Dictionary Switcher is compatible with Thunderbird 5.0 after installation of Add-on Compatibility Reporter ( https://addons.mozilla.org/fr/firefox/addon/add-on-compatibility-reporter/ ) in Thunderbird.
Thank you very much for this addon :-)