Links to software resources you may not know about (yet)
If you know of a site you think is worth listing here, then please contact me.
Ditto Music  - "The Best Free VST Plugins for Music Production"

Musink is a free notation/composition application that utilises MIDI devices when playing back scores. SyFonOne has been tested and approved as a plyback device by the author of Musink - the incredible Lee Reid of New Zealand. Recommended!

OKOTO - Computer Music Resources on the Internet. A good mix of everything. Don't miss this one.

Varietyofsound - sound affairs & audio effect programming - has a large number of free VST effects.

Accoustica has a small selection of free, traditional VST effects to grab, among them the excellent Kjaerhus Audio Classic Series.

ChordFind - "Excellent resource for finding guitar chords, easy to read graphical interface. Including 6ths, 9ths and other jazz chords. All chords available as MIDI-files."

MusicRadar  - "Music gear reviews and news, Music equipment, Tuition", "Get up to the minute news and reviews for all music makers"

Music-DSP Source Code Archive - "a collection of data, gathered for the music dsp community." If you want to write your own...

DontCrack - "The ultimate Audio Freeware resource for Mac and PC."

Music Business: Producer - "Your resource for the music industry, including record companies, music biz attorneys, managers, and producer info."

Shareware Music Machine at Hitsquad - a large list of computer music resources

MAZ Sound Tools - "Retro Gaming & Music, Sound Software, Sounds, Demoscene: Symphonic Shades VSampler Synthesizer MadTracker Immortal MindCandy Amiga Demos DVD Freax C64 Orchestra"

KVR Audio - "KVR Audio Plugin Resources, news and information about open standard audio plugins (virtual instruments and virtual effects) - VST and VSTi, Audio Units (AU), DirectX and DXi, LADSPA, DSSI, etc."

Synthzone - "Synth Zone is your one-stop midi and synthesizer resource directory. Coverage for all type of synthesizers & midi controllers , plus all relevant music software & support products."

Tweakbench - Free VST plugins, free VST instruments and free VST effects

Musica - has links to various music software, shareware, demos and freeware.

AudioMelody - "Computer music resources with downloads of audio software and tutorials and guides for mixing and recording"

Free Plugin List - "the ultimate free vst plugins list. Free vst plugins, free audio software."

TabTrax - "Tab converter player. Drum music editor. Percussion teaching and notation writing software."

VST Planet - "The site provides a lot of freeware plugins and audio software for playing,composing and producing music."

Anwida has ONE free VST effect, the DX Reverb Light: "Based on a reduced version of the DX Reverb, the DX Reverb Light is the ULTIMATE FREE reverb plug-in for PC And Mac.". It is actually a pretty good free reverb.