Sulerin is a rich, detailed fantasy campaign setting presented in free HTML format. There are several major HTML components of the site, including:
Atlas (Languages, Multiverse, Timeline)
Campaigns (Characters, Modules)
Creatures (Index, Encounter Builder)
Lore & Stories
Rule Additions (Feats, House Rules, Prestige Classes, Races)
In addition, the site has an associated forum, a subscription-based e-mail newsletter, a guestbook, and updates summary, and a search function. The Atlas includes numerous interactive, full-color, richly-detailed maps.