This is a quite interesting thread.

Here's my list. I suppose it is a bit different from a few of the others, but then I do a lot of software development.

Main system:
Sun Blade 100
UltraSPARC II cpu 500MHz
2GB RAM
2*120GB disks
Built-in frame buffer driving 20" trinitron CRT
LaserJet 4p printer
OS: Solaris 9
Applications/software used:
bash textutils, vi, TeX, and all the normal UNIX stuff.
JBoss
Oracle 9i
MySQL
Apache 1.3 and Apache 2.0
Perl 5.8
gcc 2.9.5 and 3.3
Java 1.4.2
Hercules (emulates IBM S/390 mainframe for testing apps and writing PL/I.)
Bochs (emulates Intel PC for running DOS and OS/2 apps that I still support)
Mozilla 1.7
Opera 5 (mainly for testing)
WingZ spreadsheet
OpenOffice.


Hi-Fi system (in living room):
iMac Graphite wired up to big Sony TV and home-brew things.
400MHz G3
512MB RAM.
OSX 10.3.5
iTunes, iPhoto etc.
mail.app
Safari browser
OSX DVD player
RealPlayer
Audio Hijack
iPhoto
Photoshop 7.0
Adobe Acrobat 6.0 Professional
Quark xPress 6.0
Adobe Illustrator CS 11
Adobe GoLive

The home-brew things are a titchy FM transmitter so that in the house I can tune in some of the old valve radios into iTunes, and a stereo amp.


Laptop 1.
IBM ThinkPad 760
128Mb RAM
linux SuSE 7.3
MySQL
Perl 5.8
GCC 2.9.5
Apache 1.3


Laptop 2.
Compaq EVON1015 Athlon CPU. Not sure of speed; think it is 1.7ghz. 256 MB.
Windows 2000
CygWin to run normal GNU tools, vi, etc.
MS Visual Studio 6.0
iTunes for Windows
Realplayer
LoadRunner VU-Gen.
(I don't use this one very much because I think Windows is slow and it doesn't work, so there's not much on there.)


Laptop 3.
iBook G4 12.1" 1GHz
512MB
Same software as per the Mac in the living room above
Also MySQL,
Aqua Data Studio,
Perforce 4,
xCode,
X-11
Microsoft RDC
Apogee)X Client
VNC client
(this computer is joined to me at the hip and goes everywhere with me)

There is also an old 133MHz Pentium computer which runs SuSE Linux and acts only as a NAT firewall/router to the ADSL connection.

In work they provide me with a pair of twin CPU G4 macs each with a 20" sony monitor and a 17" apple flat paned display, for coding, and a G5 mac with single display for benchtesting. Really amazing systems, those G5s :-)