The offical website for Narbonne http://www.mairie-narbonne.fr in French, English, Spanish and German.
The department of Aude's tourist infomation website http://www.audetourisme.com/ in French, English and German
http://www.cg11.fr/ Conseil General
http://www.sunfrance.com/ Official regional tourist information site
If you have a link that you think should be list here, please feel free to contact me.