Encyclopedia of Arda
From Tolkien Gateway
The Encyclopedia of Arda, or www.glyphweb.com/arda/default.asp, is an online Tolkien encyclopedia that has become one of the more popular Tolkien websites. Its articles include timelines, genealogies, root words, and a basic layout of the person/place/thing's history. Also featured is an interactive calendar that transforms modern dates into various Tolkien dates, such as Shire Reckoning.