I live using this system of objects:

Hardware

• Apple iBook Dual USB (May 2001) 12" laptop
• PowerPC 750 (G3) 500Mhz
• 10Gb IDE HD
• 640Mb SDRAM
• ATI Rage Mobility 128 w/ 8Mb
• Firewire (IEEE-1394) enabled
• CD-ROM, DVD-ROM
• 120Gb Mercury Elite Pro External Hard-drive, Firewire 800, Oxford 922 with 8Mb data buffer
• ACOMdata Firewire 12x10x32x CD-Burner
• iPod 5Gb
• Palm Vx, 8Mb

Software

• Mac OS X 10.3.2
• Open Source ``Darwin'' Kernel Version 7.2.0, based on FreeBSD 4.4 and Mach 3.0 micro-kernel
• Apache 1.3.27 Server
• Cocoa Development Frameworks (Objective-C and Java), based on NeXTStep/OpenStep: there's a free implementation of these frameworks called GNUstep: it is based on the OpenStep standard and the OPENSTEP implementation.
• GCC 3.3
• Xcode / Interface Builder IDE
• Fink 0.12.1 and Debian tools like dpkg and apt-get for binary package management.
• Everything else you'd expect to find on a un*x system

The Shell

• GNU bash, version 2.05b.0

The Text Editors

• Text Edit 1.3 (v202)
• BBEdit 6.5 (soon to be replaced with free software)
• GNU Emacs 21.2.1

Other Computers/Systems I've Used

• Sun SparcStation 4 with Sun Solaris
• Slackware Linux 7
• IBM AT / 8088, 80x86, Pentium, Pentium 2, Celeron clones
• Windows XP/2000/ME/98/95/3.11 and MS-DOS

The Computers I Grew Up With :)

• Sinclair ZX Spectrum 48k
• Atari ST 520
• Atari ST 1040
• Atari MegaSTE 2
• Korg Wavestation special-purpose computer