Germanic Myths, Legends, and Sagas
http://www.pitt.edu/~dash/mythlinks.html
A collection of electronic texts put together by D.L. Ashliman, a retired professor of folklore. Includes photographs of many ancient monuments, "The Gods' Home Pages" and links to other related sites.
Loki Cult
http://loki.ragnarokr.com/cult/
The creator of this site was accused of turning his local Asatru group into a "Loki Cult", and this was his response... Well worth checking out for those interested in that most maligned of Norse deities.
Raven Online
http://www.webcom.com/~lstead/
This site, by J.S. Pereira and Lewis Stead, is one of my favourites, partly because it's quite firmly, evenly militantly anti-racist -- a nice change from some other Asatru sites which I won't be listing here. The rant on "Asatru and Race" that I used to like ("It has been the sad fate of Asatru to have had our faith highjacked by some subhuman maggots who are trying to hitch their sick and twisted political wagon to our faith...") has now been replaced with a Nidstang, or curse directed against people who distort Norse paganism for racist ends. Apart from that, there's a lot of very good general information on Asatru, including an excellent article, co-written by Stead and Blue Star Wiccan high priest Devyn Gillette, on the commonalities and differences between Asatru and Wicca.
Runesmith's Pages
http://www.tarahill.com/runesmith/
An excellent site by Jennifer Smith, author of Raido: The Runic Journey. Much of the book is now online, along with a nifty online rune-caster, a section on tree lore, and an online store where you can order her books, handmade rune sets, and more. The site is beautifully designed, too, though it unfortunately seems not to have been updated for several years now.