Anyscore Mainly commercial sheet music with some free downloads. Includes self-published scores by living composers. http://www.anyscore.com

Sibelius Music Showcase site for the Sibelius plugin 'Scorch' - includes several thousand pay-per-download files and some free users files. http://www.sibeliusmusic.com

Music Sheaf Features manuscript staff paper in several customizable formats. http://www.musicsheaf.com

8notes.com Free sheet music pieces for piano, guitar, violin and other instruments and free lessons. Directory of free sheet music pieces on the internet. http://www.8notes.com/

Free Note Small collection of sheet music in PDF format. Links to other free sites. http://www.lightandmatter.com/music/index.html

NotaViva Free pieces in PDF format by various Classical composers as well as educational music. http://www.notaviva.com

Abacci Music Irish, celtic and world sheet music, midi files and tab. http://www.abacci.com/music/default.asp

BlankSheetMusic.net Blank sheet music to print for free, supports multiple keys and formats, guitar and bass tabs too. http://www.blanksheetmusic.net

Online Music Scores Links to scores which may be downloaded free of charge, collected by Howard J. Callon, music professor at McGill University in Seattle, Washington. http://plato.acadiau.ca/courses/musi/callon/2273/scores.htm

International Association of Music Information Centres A world-wide network of organizations promoting new music, with forty members in thirty-six countries, as of 1999. Each center is responsible for documenting and promoting the music of its own country or region. http://www.iamic.net/