Fan Fiction.net: Gilmore Girls
Listing of stories with ratings and user reviews.
http://www.fanfiction.net/list.php?categoryid=629

The Chilton Library
Archive with stories sorted by title and author, as well as challenges, list of books mentioned on the show and information on the GGfanfic mailing list.
http://chilton.smithereen.net/

Gilmore Girls Improv
Yahoo group in which members are challenged to post works based on a theme or set of words.
http://tv.groups.yahoo.com/group/gilmoregirlsimprov/

Laura's Gilmore Girls Fan Fiction
Also includes episode guide, collection of images and music.
http://www.geocities.com/gilmore_fiction/

None of That Emo Crap
Offers story reviews and critiques.
http://emo.blah-mah-gah.net/

Proud and Prejudiced
Archive of fan fiction sorted by theme, as well as poetry, improv and writing tips.
http://gilmorepnp.spiralingdownward.com/

TrifectaLy
Mostly Tristan-Rory works by four authors, as well as a glossary and forums.
http://www.trifectaly.com/ha/index.html

The TwoP Ficathon Season
Stories from a challenge to members of the Television Without Pity boards between seasons 4 and 5.
http://www.geocities.com/ficathon2004/