The "somewhat" definitive listing of music tools that yours truly has used over the years

Instruments/controllers still in possession (some used, some not anymore)

Yamaha FB-01
Yamaha SU10
Roland MT-32
Casio CZ (101 & 1000)
Korg Electribe EA-1
Korg MicroKorg
Korg Wavestation SR

Of special note - my first synth, which I do still have

Yamaha CS-01 (bought back in 1983)

Former Instruments (stuff I got rid of)

Roland Octapad
Roland S-10
Alesis SR-16
Korg M1

Hardware Interface
JL Cooper Nexus 3x8 Midi Switcher
Evolution/M-Audio X-Session

Audio Mixers & External Processors
Boss BX-8
Boss RRV-10
Mackie CFX12

Computers/Sequencers (formerly used & current)

1986-1988
Commodore 64/128 with EA's Instant Music

1988-1997
Commodore Amiga 500/1000
Dr T's Tigercub and Passport's MasterTracks Pro
(Tigercub used for it's 4 voice Amiga internal
audio/sample capabilities for doing sampled
drums/loops)

1997-present
PC compatible home built systems using
AMD K5, Athlon and Intel Pentium CPUs
Apple iBook G3 800

Cakewalk 5 thru 9.0/Sonar
Propellerheads Rebirth, Recycle and Reason
Fruityloops
Hammerhead Rhythmstation
Syntrillium's CoolEdit thru CoolEdit 2000
SonicFoundry's SoundForge and Acid
Various DX & VST plugins used with the software
above.

Have used other software, but way too numerous
to concisely list here

Also in possession but never really used
music-wise

Roland PR-100 hardware sequencer
Apple PowerMacintosh 6100
Apple PowerBook 5300cs