American Composers Alliance
In addition to information about members' services, this site has a searchable composer database and the capability of renting or purchasing scores online.
American Composers Forum
The ACF connects communities with composers and performers. This site includes information and links about programs, chapters, opportunities, composer home pages, and guidelines for various commission deadlines.
American Music Center
The American Music Center has merged with Meet the Composer to form New Music USA.
New Music USA
New Music USA was formed in 2011 by the merger of the American Music Center and Meet the Composer. The website has information on programs and support for American composers of all kinds of music as well as reference services, referrals, publications, lending library of over 55,000 scores and recordings, artist member home pages, and other relevant links.
Society of Composers, Inc.
The society's home page contains information about their conferences and performances, publications (including their monthly newsletter), CD series, member websites and email addresses, chapters, etc.