A Growing Haggadah - A hypertext Haggadah. The links connect various parts of the Haggadah and they also lead out from the Haggadah to the rest of the WWW. - http://www.davka.org/what/haggadah/
Haggadah Collection of Lubavitch Library - Valuable collection of two thousand haggadot, some very rare and historical. - http://chabadlibrary.org/exhibit/ex3/exeng3.txt
Uncle Eli's Haggadah - Humorous retelling of the Passover Haggadah in the style of Dr. Seuss. - http://www.acs.ucalgary.ca/~elsegal/Uncle_Eli/Eli.html
Shunammite Press - Had Gadya art pages from Ismar David's The Family Haggadah for Passover. - http://www.shunammite.com
An Old Country Passover - Rabbi Peretz Weizmans recording on MP3 of the entire Passover service in the old-world style of chanting. Free download. - http://www.onforeignsoil.com/haggadah.htm
Passover Family Participation Haggadah - A Different Night is a "Family Participation Haggadah." This site includes information and selections from the Haggadah, and other information and ideas for running the best seder possible. - http://www.jajz-ed.org.il/hartman
The Historical Haggadah - Description of a new interpretation of Passover history. Interactive readings illuminate events in ancient Egypt. - http://www.historicalhaggadah.com
An Haggadah for the American Family - by Rabbi Martin Berkowitz. Provides the entire ritual in combined Hebrew/English for those with little or no skill in Hebrew. Includes sale information. - http://www.americanhaggadah.com