Tim Thompson
MIDI and MP3 compositions, KeyKit algorithmic music software, and interactive web-based music generation toys.
http://www.nosuch.com/tjt.html

Bernhard Loibner
Electronic music, sound design, programming and audio-visual content creation.
http://loibner.cc

Alexey Lukin
Audio DSP developer for iZotope Inc. Reviews of audio dithering algorithms. Articles on theory of digital audio.
http://audio.rightmark.org/lukin

Pitchformula.com
Using computer-based content analysis of popular music reviews to guide the music-making process. By Loren Jan Wilson.
http://www.pitchformula.com/

Oli4' Minimalism
Electronic music, Synthedit, and with original tracks and homemade free VSTi plug-ins.
http://home.scarlet.be/~vanromo1/

Miller Puckette
Author of Pure Data (Pd), a graphical programming language for the creation of interactive computer music and multimedia works.
http://www-crca.ucsd.edu/~msp/

Richard Boulanger
Professor of music synthesis at the Berklee College of Music and author of "Csound" - a programming language designed and optimized for sound rendering and signal processing.
http://www.csounds.com/boulanger/

Scott R. Garrigus
Music technology news, articles, downloads, reviews, tips and tutorials for home recording and professional musicians!
http://www.digifreq.com/digifreq/

Lex Nahumury's kX Project Support Site
Lots of great resources on DSP programming in the "KX project" environment (must-read for all Creative soundcard owners).
http://members.home.nl/nahutec/

Craig Latta
A composer and a computer scientist, author of 'Netjam' (a network music collaboration software).
http://netjam.org/

Trevor Henthorn
A musician and a music researcher working at the music department at the University of California, San Diego
http://music.ucsd.edu/~trevor/

Phill Phelps
an electro-acoustic musician from Bristol, UK
http://www.zenpho.co.uk/

Tom Erbe
studio director, lecturer in computer music
http://music.ucsd.edu/~tre/

Fredrik Olofsson
A passionate music researcher and software developer
http://www.fredrikolofsson.com/

Peter Plessas
Musician, audio engineer, student at the IEM Graz
http://plessas.mur.at/

Davide Morelli
musician, composer, software developer and artificial intelligence researcher
http://www.davidemorelli.it/

A Compilable Implementation of Xenakis' Fortran Source Code
Fortran source code by Iannis Xenakis, compilable on a modern machine with a Fortran 95 compiler.
http://users.on.net/%7eparisdownes/

Interactive music development project
Biomedical engineer/musician developing interactive midi software for keyboard players with biofeedback sensor system. Free code, lots of resources and very nice video tutorials.
http://interactive.dat.si

Alex McLean | hacking music
algorithms that generate music, software art, electronic art and live programming
http://doc.gold.ac.uk/~ma503am/alex/

GarageBand for Windows
This weblog explores the products that may work as a suitable Windows replacement for GarageBand (music software running on Macintosh only). Test results and initial impressions of MixCraft, Sony Acid and other products.
http://garagebandforwindows.wordpress.com

Digital Music Recording
Weblog for musicians and sound engineers interested in creating music using computers and pro audio tools.
http://digitalmusicrecording.blogspot.com/