ABBA - The Site
The official web site includes news, biographies, galleries, and sound clips.
http://www.abbasite.com/

ABBA: The Book
The first illustrated history of ABBA, written as a diary. It contains hundreds of rare and unpublished photographs, as well as new information about the band's career.
http://abbathebook.online.fr/

CanEHdian.com: ABBA
Biography, discussion forum, audio files and links for the Swedish quartet.
http://www.canehdian.com/non/artists/a/abba/biography.html

VH1: ABBA
Reviews, news, audio, biography, discography, links, and a bulletin board.
http://www.vh1.com/artists/az/id_1391/artist.jhtml

ABBA World
Provides the complete list of ABBA song titles (including working titles) and more than 400 ABBA links, categorized and reviewed.
http://www.abba-world.net/

ABBA for the Record
Worldwide ABBA collection with full color pictures, front and back, of hundreds of releases.
http://www.abba4therecord.com/

ABBA Story
Discography, news, songs, lyrics, and photos.
http://www.abba-story.com/

Rollingstone.com: ABBA
Includes a biography, discography, photos, articles, links and message board.
http://www.rollingstone.com/artists/abba

ABBA Fan Club
Official international fan club. Includes member biographies and membership information.
http://www.abbafanclub.nl/

Abba News: Topix
News about Abba continually updated from around the net.
http://www.topix.com/who/abba

Topix: ABBA
News about ABBA, collected from various sources on the web.
http://www.topix.com/rss/who/abba.xml

Memorable Music Hall of Fame: Abba
History of the band.
http://www.memorabletv.com/memorablemusic/abba.htm