Software Companies
Beatnik Plug-In -
Add Music to Your Site
Musitek -
MidiScan
Passport Designs -
Encore
PG Music -
Band In A Box
Musitek -
MidiScan
Shareware Music Machine
Welcome to the World's Biggest Music Software Site!
Twelve Tone Systems -
Cakewalk
Hardware Companies
Daddy's Junky Music
Ton's of used equipment as well as some resonable prices
Harmony Central
Great site for reviews of equipment as well as a nice classified section.
MidiFarm
A good place to find information as well as a small classified section.
Recycler
Giant searchable classified section with some absoulutly amazing prices (as well as some rediculous ones as well.)
Reed Kotler Music
makers of cool transcribing aids that help you learn by ear from your favorite recordings.
Roland Canada
Songbird Ottawa
Decent prices on used gear as well as a knowledgble staff.
SonicState
Nice classified section.
Sweetwater Sound -
These are personnel classified ads,  you can also buy new items from Sweetwater.
Synth Site 
A good site to provide information and user comments on a variety of synths..
Synthcom
A complitation of Used gear prices.  This is very accurate and a good way to  make sure that your not being ripped off.  There should also be a link to  their New gear price list.
SynthZone
The first and last place for synth links on the net.
Other Midi Sites
Betty's MIDI Page
If you follow this link, you'll have surfed the Web all the way to Vienna, Austria, home of Mozart, Strauss and Betty. .
BLUEGRASS: The Bluegrass MIDI Page
Bluegrass MIDI files are becoming a reality! Yes, and Cybergrass as some for your entertainment. These files are some of the very first bluegrass done with the MIDI interface. Thanks go to the bluegrass musicians who have taken the time and effort to share these samples of bluegrass with you. Readers may submit Midi files for these pages but please only submit Bluegrass music material.
Gilbert and Sullivan Archive MIDI Home Page
Listen to the music of Gilbert and Sullivan. We have MIDI and MIDI Karaoke files of over 100 songs from the Gilbert and Sullivan Operas, and other musical works of Sir Arthur Sullivan.
Harmony Central™: MIDI Tools and Resources
What's New . SearchMap . New User Guide . Suggestions? MIDI Tools And Resources . The MIDI Forum . MIDI Documentation . Introductory Material . The MIDI Specification 
In the Field (of The MIDI Farm)
MIDI Software . MIDI Hardware . Keyboards . Digital Audio Hardware & Software Free Files (MIDI Files and MORE!) . Sampling and Sounds . Music Retailers.
MIDIWORLD International
MIDIOTS
Welcome to the home of original MIDI composers. Here you will find the most prominent MIDI composers on the net, MIDI composing tips, MIDI this, MIDI that. How MIDI do you want it?
Oleg Mezjuev's Swedish Ragtime Home Page
Dear ragtimers! My name is Oleg Mezjuev. I am 29 years old and live in Järfälla (near Stockholm), Sweden. I have been into ragtime since 1985 and now as I have discovered the world of the Internet I would like to share some swedish rags with other ragtime fans.
Ragtime Home Page : FAQ, links, catalogs, MIDI files and information on artists like Scott Joplin, James Scott and Joseph Lamb
Ragtime Piano MIDI files by Warren Trachtman MIDI files, which I have sequenced, of ragtime piano pieces by : Scott Joplin, James Scott, Joseph Lamb, Jelly-Roll Morton, Eubie Blake, and others.
Web Thumper - MIDI Files
This collection of MIDI files has been compiled from the news group alt.binaries.sounds.midi and contains only top quality MIDI files. All MIDI files are General MIDI compatible and have been tested using a Roland Sound Canvas and Cubase sequencer.