EverQuest - The official site. News, game info, network status.
EverQuest Headquarters - News, screenshots and many useful, up-to-date guides.
EQ Vault - Most up-to-date news site out their, with several message boards.
EQ Stratics - News, guides and message boards.
Allakhazam's Magical Realm - THE site for quests, item stats and more.
EQ'Lizer - Weapon/Armor stats, spells, screenshots and more.
EQ Casters - Detailed spell info for pure casters, along with several guides.
Graffe's Wizard Compilation - Tons of information devoted to fingerwagglers.
Arch-Mage Answers - Verants spell designer answers many spell related questions.
Feel free to submit any sites that belong here.