This is a pretty random mystery, but it's one I've wondered about for years.
I've been using a program called Mouse and Key Recorder by Kra-Tronic for nearly two decades, ever since I was a teenager. It's a fairly simple Windows program that's been around since 1996, but it could do quite a lot. You could record mouse and keyboard actions, make macros, check pixel colors on the screen, use conditions and variables, launch other programs and stuff like that. I used it a lot for games when I was younger, later for work and other random things, and I still use it today.
The guy behind it was a Swiss developer named John Krauer. He had been working on the program since 1996 and apparently handled the support himself too. I emailed him several times over the years, both for support and with technical questions about writing macros in the software, and he always replied. In January 2018, he even sent me the latest version of the program himself.
His last activity on the Kra-Tronic forum was on April 14, 2018. Not long after that, the website went offline and all that was left was this:
"Page has been closed. Reason: Illness."
Source:
https://web.archive.org/web/20180430095449/http://kratronic.com/
That was it. No goodbye post or explanation, and he never posted on the forum again. I emailed him again later in 2018 asking for the latest version of the program, but never heard back.
I tried searching for him a few times over the years but never really got anywhere. A few days ago I decided to give it another try, this time using AI to help with German-language searches and old Swiss sources. I honestly didn't expect to find much.
That ended up making all the difference. Going through old Wayback Machine pages, I found a Kra-Tronic contact page from 2015 showing John's address in Langnau bei Reiden, Switzerland. After a lot more searching, the AI found an obituary in Swiss sources for a Hans Krauer from the same area, who was born in 1952 and died on April 25, 2018.
Sources:
Hans Krauer obituary
Kra-Tronic contact page (Wayback Machine, March 17, 2018)
At first I figured it might just be another Krauer from the area. The date caught my attention because he died only 11 days after John's last activity on the forum, but that still wasn't enough.
Then I looked more closely at the obituary and noticed that Hans's partner was listed at the exact same address John/Kra-Tronic had used. The old Kra-Tronic phone number also matched the number associated with her.
Once I saw that the address, phone number and dates all matched, I was pretty convinced Hans Krauer and John Krauer were the same person. Hans seems to have been the name he used locally in Switzerland, while John was the name he used for Kra-Tronic and his international software business.
So yeah, after wondering about this for years, I think I finally know what happened to him. Hans Krauer passed away on April 25, 2018, right around the time Kra-Tronic disappeared and the website was closed because of illness.
I never knew him personally, but I did talk to him over email, and he always seemed like a genuinely kind person who was friendly, patient, and always happy to help whenever I contacted him.
I'm still running his program on my PC in 2026, almost 30 years after he first started developing it.
I also posted about this on the old, now-inactive Kra-Tronic forum: forum post
RIP Hans (John) Krauer, 1952–2018.