Lots of info, frequent updates, nice layout, great message boards, and very few spoilers. Crossroads of Norrath - Not quite as much info as the above sites, but the seem to get most of the important updates. Everquest Express - Weekly Everquest Newspaper. Everlore - Tries to do everything, with actually pretty remarkable success. Puts up lots of info, and lets anyone comment on everything, so there's an interesting mix of useful info, blatant spoilers, and misinformation.
Page looks very nice, but navigation can be a bit difficult sometimes.
EQ'Lizer - Good site. Lots of info on classes, zones, equipment, monsters, and spells. Some quest info as well. Spoiler heavy, you've been warned. Everquest Caster's Realm - Page for all Everquest spellcasters.