For a long time all the IBM ATMs ran OS/2 Warp 4.

I recently saw that running on special 16 channel DAT recorders used by the 999 service, recently as in "within the past five years". I believe they've been retired but kept around in case they need to recover tapes off them.

I kept my mouth ABSOLUTELY FUCKING SHUT about knowing my way round OS/2 Warp 4.

I've completely forgotten pretty much everything about OS/2... worked support for iomega for a while covering OS/2, Jazz and 2nd level zip calls in the late 90's. I have very little desire to look back to those days.

Except it would be nice if computers were as snappy as back then... so many layers of cruft that nothing really pops. I remember I used to just disable all the NT/2K animations and it felt so nice. I built a career on web apps, but most are just really poorly written it pisses me off.

> Except it would be nice if computers were as snappy as back then... so many layers of cruft that nothing really pops.

You should try Haiku: https://www.haiku-os.org/

It's actually pretty usable these days, at least on Thinkpads and other "generic Intel chipset" machines.