• Desktop: Core-i7 13700K, 3.4GHz, 16 cores, 32GB ram. Dual 4K 27" screens (Dell U2720Q and Dell P2715Q)
• Laptop: Core i7-7600U, 2.80GHz. Lenovo T470S. 14" 24GB RAM, 1TB SSD.
• Video conference laptop: Core i5-6300U, 2.40 GHz. Lenovo 13
• Mac: Mac Mini. Core i7-4578U CPU @ 3.00GHz. 16GB ram. 512GB SSD.
• Mac: Mac Mini m1. 16GB ram. 3.2GHz 1TB SSD.

Before 1985, I had to play around with the computers of my friends. I think it is fair to say that my life took a different turn 1985, with that first computer...

This list only contains the computers I've personally used in my home. It does not include computers for the household or those used by other family members.

• 1985, Spring - I and my brother Björn bought a C64 together. We immediately started hacking BASIC on the thing and in the end of 1987 I wrote my first 6510 assembler demos. More stories from our adventures with the C64 are told on Kjell's Horizon page.
• 1990 - Amiga 500. We initially wrote some assembler and fiddled with demos. Without the narrow limits of the kind the C64 offered, it proved not as thrilling and we skipped over to system programming in C. We started writing on our text editor FrexxEd.
• 1992 - Amiga 3000. The good old 500 got a little too slow and it took ages to compile and build FrexxEd on it. The 3000 with its blazing speed (25Mhz 68030) took us to new levels! When I subsequently bought a graphic card for it, I could even run 1152x900 with 8bit colors!
• 1997 - Desktop: Intel Pentium 120Mhz. While this machine mainly ran Windows 95, its prime use was to run an X server so that I could connect to my work computers and hack unix on X from home. The Amiga was put to the side.
• 2000 - Desktop: Intel Pentium III 733 Mhz. Linux, first and primarily. With my 21" CRT screen (Nokia 445PRO) it made a neat environment.
• 2002 - Laptop: A 600MHz celeron box with 96MB ram, running Redhat Linux 7.3.
• 2004 - Desktop: AMD Athlon XP 2800 2053 Mhz ASUS A7V8X-X motherboard. 512MB RAM, 200GB disk. Linux, Debian. Wireless D-Link PCI card 802.11g. No more noisy box.
• 2006, December - Laptop: ASUS F3JA, 1.8GHz dual core (Intel Core 2 Duo T5600), 120GB sata-disk, 1680x050 15.4" LCD. Intel 3945ABG chipset. Dualboot Windows/Linux.
• 2007, April - Desktop: AMD Athlon 64 X2 5600+ (2.8GHz), 4GB RAM (PC2-6400 800MHz), 2 x 500GB SATA disks. Asus M2NPV-MX GF6150 Motherboard, Zalman CNPS9500AM2 Fan. D-Link DWL-G520 Wireless PCI Adapter. Creative Sound Blaster PCI since Linux has no audio support for the on-board stuff. Using a DELL 2001FP 20" 1600x1200 LCD screen.
• 2009, May - Netbook: Asus EeePC S101, 10.1" 2GB RAM, 16GB SSD + 32GB SDHC card.
• 2009 - upgraded desktop to 24" Benq 1920x1200, inserted a ATI Radeon X300SE graphics card since the Nvidia open source driver doesn't deal with this resolution
• 2012, September - Desktop: Intel Core-i7 3770K, 3.5GHz, 16GB RAM, 256GM SSD, 3TB HDD. P8Z77-I Motherboard. More details
• 2014, January - Laptop: Lenovo Thinkpad W540. 15" 1920x1080, 16GB RAM, 512GB SSD. 2.7GHz Intel Core i7-4800MQ
• 2014, October - Mac Mini for developing Firefox stuff on Mac OS X with. Also usable as a kids computer at times to play minecraft.
• 2015, November - Mac Mini replacement when the SSD died in the previous. Core i7-4578U CPU @ 3.00GHz. 16GB ram. 512GB SSD.
• 2016, November - a Lenovo 13 running Windows 10, for video conferencing (only). Core i5-6300U 2.40 GHz.
• 2017, February - upgraded my desktop to 32GB ram and new 27 inch 4K screen. (Dell P2715Q)
• 2017, August - upgraded my linux work laptop to a Lenovo T470S. 24GB RAM, 1TB SSD. Core i7-7600U 2.80GHz. Replaced the old W540.
• 2020, July - upgraded my second screen to a 4K 27" as well (Dell U2720Q)
• 2022, December - received a donated Mac mini m1. 8C CPU/16GB/1TB/8C GPU/1GbE.
• 2023, February - upgraded to a new dev machine Intel Core i7-13700K, 3.4GHz 16 cores, 32GB 3600MHz ram, 2TB SSD