Great site about the manga Lady!! and its sequel Lady Rin by Youko Hanabusa. 

French Glass Mask community, full of information and nice members.

The Garasu no Kamen Fanlisting, owned by Francesca. Go join! ^^

The Masumi Hayam fanlisting owned by Francesca

Francesca's wonderful site, with lot of info, fanarts, a big gallery, and much more. ^_^

A Glass Mask image gallery

Really useful site. You'll find synopses from the Glass Mask volumes with some pics

The best Glass Mask site regarding information.

 A really good page about the Glass Mask drama.

Glass Mask yahoo group. Go join! ^^

Another good site if you are looking for info with a detailed timetable.

Informative site with a nice and organized layout

Informative site with several sections and detailed info.

Nice site with a cute layout and several sections

Aresian's site with fanworks, summaries in italian, etc,.

The best site for Glass Mask fanfics and fanarts. Although the fics are in Italian. ^^;;

Alice's site

Part of onlyshoujo.com It has a great gallery.^^

French Glass Mask community, full of information and nice members.

Site with summaries of the story after volume 42

A really good Chinese site with several galleries, info and scans of the story after volume 42 and much more

Cute website with several sections

Shion's Glass Mask wonderful site with info, fics and a gallery

Gorgeous Masumi and Maya fanart

A site with really beautiful fanarts and hylarious fancomics. ><

Nice fansite with several fanarts and fanfics by different authors

Fansite with elegant artwork

Fansite with several fanfics and oekaki board

Site with really good fanarts in a more realistic style.

Fanarts site with soft-looking illustrations

Cute artwork.^^

Fansite with nice fanarts and fics

Really cute artwork and fics ^-^

Cute illustrations with a unique style

Glass Mask site with lots of sections

Site with lots of beautiful illustrations