The Lair of Madness

Devoted to characters the Mad Hatter and Jolt. Includes pictures, profiles and sounds.
http://www.lairofmadness.com

Darkunderground

Stone-based puzzle site with storylines, monthly editorial, fan fiction, and news.
http://www.darkunderground.co.uk

The Lair of the Huntress

Dedicated to the Huntress, a sometimes misunderstood Batman family member. Contains fan fiction and pictures.
http://www.geocities.com/Hollywood/Set/6742

Birdwatching: Black Canary and Oracle: Birds of Prey

Dedicated to chronicling the adventures of Black Canary and Oracle, both together as the Birds of Prey and separately around the DC Comics universe.
http://www.canarynoir.com/

The Dark Knight

Devoted to Batman, the Dark Knight Detective. Features information on many aspects of the comics world of Batman.
http://www.darkknight.ca/

Shadows of the Knight

An exploration of Frank Miller's 'Batman: The Dark Knight Returns' and 'Batman: The Dark Knight Strikes Again'. Has a sketchbook, articles, and audio interview, image gallery, and sequel news.
http://members.tripod.com/kc_darkknight/

Golden Age Batman Site

Resource on the Batman of the 40's, 50's and 60's. Contains an index to original runs and reprints, a cover gallery, a rogues gallery, links to other Golden Age sites, and a Batman mailing list. The Comic Book Value Calculator, an online comic collector
http://www.goldenagebatman.com/

Batman: The Ultimate Evil by Andrew Vachss

Official site for a Batman novel and subsequent comic adaptation.
http://www.vachss.com/av_novels/batman.html

Batman: Shadow of the Bat

With biography of creator Bob Kane, timeline, reviews, and character descriptions and images.
http://thebatman.bravepages.com

Gotham Girls

Official page for the Warner Bros. Online original animated series "Gotham Girls," featuring Batgirl, Catwoman, Poison Ivy, and Harley Quinn. Original episodes, games, contests, and downloads.
http://www.warnerbros.co.uk/web/gothamgirls/home.jsp

The Riddler

Interactive animated stories using Flash and JavaScript featuring Batman's deadliest foes, and graphic puzzles presented by Edward Nygma, Gotham's genius.
http://riddler.batbad.com/

Collected Issues of the Dark Knight

Home of the Batman comic database. Includes information on who is featured in them, who created them and what story archs they are part of.
http://www.rasalghul.co.uk/

The Fool's Errand

Four-color, 21-page e-comic by Greg Rucka. Features the story originally published in "Batman: The 10-Cent Adventure" that launched the "Bruce Wayne: Murderer?" storyline.
http://www.dccomics.com/features/bwmurd/ecomic/batmurder1.html

Women of Gotham

Focuses on the women characters of the Batman universe. Features e-zine with articles, character interviews and biographies, fan fiction, comic reviews, and a community section.
http://www.geocities.com/womenofgotham/

Batman: Defender of Gotham

Features interviews, character profiles, columns, comic book reviews, news, fan art and fiction, multimedia downloads, and message board.
http://www.defenderofgotham.net/

TheBatSquad.Net

Covers Batman and related titles, including continuity in cross-overs and major events, trade paperback collections, character profiles, and wallpapers.
http://www.thebatsquad.net/

Batman: Yesterday, Today, and Beyond

Fan page covering the character in comics, film, television and animation. Featuring news, biographies, animation and history.
http://www.batmanytb.com

Batman: The Long Halloween

Devoted to the 13 issue series by Jeph Loeb and Tim Sale. Includes summaries, annotations, interviews and images.
http://www.vacuumboy9.com/tlh/