Year View it's a Thunderbird/Lightning add-on wich add a year view to the existing calendar views
Last release from https://addons.mozilla.org/it/thunderbird/addon/14467/
- French localization by Eric Brosselin
- German localization by Jens Maurer
- Spanish localization by Jose Baeza Noci
- Swedish localization by Mikael Hiort af Ornäs