Notre-Dame de Paris

The official site of the French, British, and US musical Notre-Dame de Paris
FROLLOZONE

This is by far the largest source of various HoND reproductions out there.  In fact, they have just about every version that I've ever heard of.  Inlcuding, much to my delight, scripts of the 1939, 1982, and 1997 movies.
Project Gutenberg --Hunchback of Notre Dame

The entire novel in English.  As far as I know, this is the only place to find it on the internet.  Be sure to read the note at the very first, written by Project Gutenberg
Bibliomania

Alright, I was wrong, there is another site with the English version of the book.  But you have to go through several frames to get to it.  Kinda difficult, but search around.  The novel's there, along with two different prefaces
The Hunchback Homepage

At last!  There's another webpage out there dedicated to the original novel.  There are a few others, but I'll link them later.  This site focuses on informing the mostly misguided public on the realities and higher quality of the book as compared to the versions made since then.  It's still getting built, but I would highly recommend the section on the author.  I don't have much up about Victor Hugo (eh..heh...heh) so if you really want to know about the man behind the mystery, go here.  Veeeery informative.
Things are constantly being updated.  I'll divide the links into several different sections, though I'm not even near ready to get them all up yet.
The Book:
E-texts in French and English
Unofficial Hunchback of Notre Dame Pages:
Sites addressing information about The Hunchback of Notre Dame/Notre-Dame de Paris, the novel or other versions.
Official Hunchback of Notre Dame/Notre-Dame de Paris Pages:
Official sites of various productions and adaptations of the novel.
Miscellaneous Sites in Relation to Notre-Dame de Paris:
Contained here are all the sites which have revelance to Notre-Dame de Paris, the novel, and can be useful in understanding it.
Miscellaneous Sites:
Sites which may not seem to have anything to do with the novel, but are helpful in understanding the culture that surrounded the novel
ABU: la Bibliothèque Universelle -- Notre-Dame de Paris

Text in the original French, provided by l'Association des Bibliophiles Universels (ABU).  This link actually takes you to the main page.  Once there, on the right hand of the screen, you'll see two links to "auteurs" and "textes".  If you take "auteurs" go to Hugo, Victor.  If you take "textes", scroll down to the Hugo, Victor section and choose Notre-Dame de Paris.  If you have difficulty following these directions because you don't speak French, see the below link.  ; )
The AOL Hunchback of Notre Dame/Notre-Dame de Paris RPG Headquarters

Okay, not exactly a page on relevant information.  But I'm an active member of this RPG (role-playing group), and I must always recruit when I can.  ; )  Basically, what we do is assume different personas and play characters.  Laugh all you want, but what we do is almost exactly the same as what William Shakespeare, Walt Whitman, Stephen King, and yes, even Victor Hugo, did/does.  Except for we're a bit more sane.  They have multiple personalities and we have one each.  We role-play in the setting of the book.  Membership's available to anyone on AOL or AIM who submits an application.  We follow the book and all adaptations, so we're pretty flexible.  Usually, though, we try to keep it realistic to Medieval France.  That is, no magic and outlandish power.
Coming soon!
Friends' Sites:
Ha, ha, yes, I have friends...
Rien à Perdre (in English)

This is a site of my friend, Lindsay.  It's basically about her and her life in relation to the World of Broadway.  Got a cool quote page!  And a link to her Bruno Pelletier page (the original actor who played Gringoire in the French and London Notre-Dame de Paris)!  Plus, she's also now the maintainer and webmaster of the official Doug Storm website (the man who played Quasimodo in the Vegas Notre-Dame de Paris version).  Should be a link to that, there.
Hugo, Victor Marie @ Bartleby.com

Wrong again.  Yet another e-text of the novel.  But this one also contains commentaries and essays about the novel!  Whoo-hoo!  Plus some interesting details about the original manuscript.  Follow the link at the bottom of the bibliography page to get there..
The Court of Miracles for HoND, Clopin, & Frollo Fans

An extensive Hunchback of Notre Dame site based primarily upon the Disney movie.  It's more of a personal homepage by the author Lexy Vanier, though it has some very informative pages, with pictures, maps, and biographies.  Be sure to read her fanfiction! 
Victor Hugo Central

Practically your one-stop information page for anything by Victor Hugo.  This page contains links to nearly all of his works (in English), criticism by contemporary authors and others, illustrations, links to fan pages, information pages....nearly everything you could possibly want.  And since I'm dreadfully short on Hugo info....this is a good place to visit.
Disney's Hunchback of Notre Dame (stage musical)

One of the very few sites on the internet dedicated to the stage musical of Disney's Hunchback.  What's that you say?  Haven't heard of it?  Most people haven't, since it's only been released in Berlin.  However, it's an absolutely spectacular musical, with the lovliest sets, and an amazing story.  If you thought Disney's was too childish, then this is the musical for you!  This site is in English and provides song clips as well as pictures, as well as vast amounts of information.  Unfortunately for those who don't speak German (like me) the songs are in German.  However, Stephen Schwartz (the original lyricist of the movie) did write English lyrics, and this site has those!  A whole sleuth of new songs as wonderful as the first ones.  Don't miss this site!!
Mr. Fernie's Website

This site provides a very helpful booklet on understanding the novel of
Les Miserables, Victor Hugo's other very successful novel.  Also, he has a page that makes comparisons between Notre Dame de Paris and Les Miserables.  You can find the link at the bottom of his site.
Hunchback

C. Rainey Lewis' musical production.  I can't tell you if it's still running -- it was created back in '98 up in Seattle.  This page as pictures of the actors, concept art, lyrics, and some mp3 clips of the songs themselves.  It gives you a place to order the soundtrack from, so if you're interested...
The Hunchback of Notre Dame by Charles Seymour Jr. and Neil Radisch

One of the first musical productions I ever found on the internet.  I love these songs.  I adore these songs.  Okay, I lied, I like some of these songs.  But you will too!  Hear the musical snippets!  This was produced in '93 somewhere in New England.  Can't remember where.
The Hunchback of Notre Dame

This musical adaptation was written by Dennis De Young, of Styx fame.  I can't tell you much about it.  I once upon a time heard about four songs from this soundtrack -- Paradise, Beneath the Moon, Hey Quasimodo, and The Confrontation.  Paradise is very lovely, as is Beneath the Moon.  Hey Quasimodo is positively hideously, and while The Confrontation sounds pretty low quality, I think it's got great potential.  Okay, my two cents worth.  You can find here lyrics, as well, to all the songs.
The Hunchback of Notre Dame

Another musical production by Elmer Hawkes.  This page has pictures and musical clips.  My favorite:  Philosopher of the Streets.  Bwaha!  I can sing every word perfectly and do so frequently!  Even in public establishments (hear the clip: believe me, you'll laugh).  You can either contact him from the site or order the soundtrack from Amazon.  The Amazon site also has additional song clips.
Ted Neeley and Michael Rapp @ MP3.com

Yet another musical.  This one, however, only leads you to a site where you are able to sample some of the songs off the Quasimodo: Prince of Fools soundtrack.  Particularly Justice, The Gathering, and The Festival.  I recommend The Gathering.  Dregs of society!  Ohh, love Gringoire.  I don't know anything else about this musical.  Except for one of my friends is friends with the guy who played Gringoire, which is freaking awesome.  But, then again, she's also friends with the guy who played Gringoire in the Vegas Notre-Dame musical, and she got to meet the guy who played Gringoire in the French Notre-Dame musical.  Oh, and in the British Notre-Dame musical.  Blah, I just hate her.  Visit her site at the bottom of this page!
The Hunchback of Notre Dame -- The Atlanta Ballet

As it says, this is a ballet.  I can't tell you if it's great, but it's got some very interesting pictures, and some clips of the music that the ballet dancers perform to.  Also a bunch of HoND links at the bottom.  Believe me, you'll enjoy them.  Anyhoo, I dunno.  In this version, Gringoire is, as my sister would put it, a big fat jerk.  Even worse than in the book, amazingly enough!  But you'll enjoy it.
The Hunchback -- TNT Original

The official website of TNT's original The Hunchback, starring Mandy Patrinkin and Richard Harris.  Enjoy!
Classic Bookshelf -- Victor Hugo

Ohh, I'm so wrong.  Yet another one.  But the beautiful feature about this e-book is that you can adjust the font size, the font type, the text color, the background color, everything!  Kinda complicated to figure out how to use at first, but you can get the hang of it.  In English.
The Literature Network -- Hunchback of Notre Dame

Last one, I swear.  This one is...fairly typical.  Links to chapters.  Only added feature is a search engine for the book.  In English.
....not sure what this is titled

I really can't tell you what this website is about.  It's from my friend, Michele, and it's too weird to describe.  Just her personal homepage.  It has nothing to do with The Hunchback of Notre Dame.  Don't even think it has quotes from it...