STEIM – Amsterdam
Center for research & development of instruments & tools for performers in the electronic performance arts.

School for Improvised Music (SIM)– Brooklyn
Promotes the teaching and advancement of improvised and creative music.

Critical Studies in Improvisation
Peer reviewed, academic journal on music improvisation

International Society of Improvised Music (ISIM)
Promotes performance, education, and research in improvised music.

European Free Improvisation Pages

Perspective of New Music

International Computer Music Association (ICMA)

Society for Electro-Acoustic Music in the United States (SEAMUS)

Organized Sound 
International Journal of Music and Technology – published by Cambridge

Computer Music Journal
published by MIT

Cycling 74
Home of the MaxMSP programming environment

Home of the multimedia programming language