23five Incorporated  
   A non-profit organization founded in 1993 to develop and increase awareness of sound works in the public arena, and to support and educate artists working with and discussing the medium of sound.
   http://www.23five.org/

Self Annihilation  
   An organization based on a non-structured belief system and complete relation to the existentialist boundaries of schizophrenic behavior, attitude and thought.
   http://www.geocities.com/SoHo/Cafe/8393/

Origami Republika  
   Cultural network of people involved in communication and exchange without rules or regulations. Covering anything from street art to improv performance and music.
   http://kunst.no/origami/

Freenoise  
   Unusual music and arts, including projects Wrong, Cock ESP, Emil Hagstrom, Sunship Records, E.F. Tapes, Betley, BBPTC, and other artists.
   http://freenoise.org/

Experimental Music Collective  
   Collective of experimental musicians providing MP3 downloads and related links.
   http://s900.net/

Society for Ambient Noise Enthusiasts  
   A club for explorers of all types of noise, experimental, electronica, improv, drone, field recordings, ambient, post-rock, tape music, electroacoustic, avant-garde, glitch, lo-fi, industrial, and related sounds.
   http://groups.yahoo.com/group/sane2/

XHPONOZON  
   A non-commercial organization that promotes and organized events featuring dark experimental music ranging from dark folk and medieval music to ambient soundscapes and industrial noise.
   http://www.xhponozon.com/