Rose: The purpose of Seamonkey is to be more than a browser - it is a browser, an email client, a news reader, an irc client and a wysiwyg-html-editor in one single application. So if you look for a browser, use firefox. If you look for an email app, use thunderbird. Only if you want to have everything integrated consider using Seamonkey (not ;)).
By the way: on the project page they say that Seamonkey has tabbed browsing...
(Cacher) Si vous souhaitez saluer quelqu'un dans sa langue natale, essayez notre Dictionnaire du Joueur, par le lien "au sujet des langues" sous les drapeaux. (pauloaguia) (Montrer toutes les astuces)