Anonymous
Information, summaries, characters, small gallery, and links.
Exotique
Information, summaries, character profiles, small gallery, media, fan art, and links.
Wishes for Sale
Synopsis, character information, manga scans, cosplay pictures, and wallpapers.
XXXHolic: The Watanuki Files
English-translated scans of the first several chapters.
XXXHolicness
Scans of the first several chapters with Chinese dialogue.
Yuuko's Store
Information, image galleries, media, and scanlations in English, Spanish and Chinese. [English and Spanish]