When I started my recent job the team kept referring to a box running "weird linux".
After getting on-boarded and accessing the box it turned out to be running a very old version of OpenBSD.
To this day I'm curious who had the wherewithall to install OpenBSD in prod but was seemingly ignorant of the 1yr support cycle.
I started reading and was hoping someone had installed one of the Linux distros that were popular at the turn of the millennium, like Mandrake, Slackware, etc. and it was still trucking along 25 years later.
In 2010 or 2011, deviantArt was running on several hundred slackware servers. One of my projects at that job was converting everything to run on Debian with config management in Puppet to replace all of the old manually configured services.
Thats a name I haven't heard for a while - I was obsessed with scouring deviantart for cool wallpapers during my very early Linux days of desktop tinkering (mostly fluxbox and gkrellm tweaking).
Oldest boxes running are RHEL5 and Win Server 2008.
I was trying to explain to the IT Director that both were released when I was in elementary school so I'd have to brush up on them.
I'm guilty of something like that. At my very first job I used OpenBSD to manage the corporate firewall and proxy. 6 months later quit to attend college, and I have no idea what they did to that box lol.
Sounds like me, I left a number of openbsd machines at a previous shop I worked at. I kept them updated, but based on the bewildering mishmash of linux distros and versions, there were a surprising number of sco boxes hanging around as well, their general philosophy was to set a box up for a task then never update it afterwards. So I expect all my obsd boxes are still there at exactly the same version I left them at.