The Music Room
https://www.musicroon.com
Efficient source of sheet music including music for choirs.

The New Radio 3 forum
http://www.for3.org/forums/
Interesting site for supporters of Radio 3 including a good forum on radio 3 broadcasts especially the weekly Choral Evensong.

Gerontius
http://www.gerontius.net
Gerontius is a site for choirs and lovers of choral music. On the gerontius site you will find searchable directories of UK choirs and choral concerts, and other choral music resources.

British Choirs on the Net
http://www.choirs.org.uk
This is a listing of all known British Choral Web sites (or email links). Over 1,100 choirs listed.

Anglican Church Music
http://www.churchmusic.org.uk/
This site aims to be a central source of information for Anglican and Episcopal church and cathedral music, with resources for church musicians, singers, congregation members, or anyone who enjoys this kind of music.

Choral Net
http://www.choralnet.org/
A central portal to online resources and communications for the global choral music community.

Musica International
http://www.musicanet.org/
A non-profit making association, "Musica International", created on February 6th, 1998, is devoted to developing and propagating the use of the Musica database and to transforming it progressively into a virtual multimedia library.

Sheet Music Direct
http://www.sheetmusicdirect.com
This site claims to be the internet's largest source of legitimate, copyrighted 100% digital sheet music since 1997. This site now has over 5,000 songs for instant download. Available for secure purchase online and delivered directly to a printer.

Choral Public Domain Library
http://www.cpdl.org/
Begun in December 1998, CPDL is one of the world's largest free sheet music sites. You can use CPDL to find scores, texts, translations, and information about composers.