Why not? Still using Windows 7 on one of my ThinkPads. It's a solid system, if you know what you're doing and how to use is safely.
this post was submitted on 18 May 2025
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Some might be surprised how many systems are still running on AS400s. IBM still makes and maintains IBMi, the modern iteration. My last company wrote our flagship product for these machines, all green screen. Our customers would sometimes move to our GUI product and jump right back to the prompt menus. Hey, if you gotta move fast and have a bulletproof system, text menus are the only way to fly!
By my god, the skill set for running and programming those beasts touches on almost nothing I've learned in 30+ years of IT work. Wish I had got experience in that part of the company, seen some solid job posts for that sorta tech.
I worked in the airline industry for years and learned a GUI overlay for one system and another entirely green screen system called SHARES (see if you can guess the airline). Honestly I kind of enjoyed working with those systems; there's some refreshing "back to basics" feeling kind of like driving a manual transmission.
In my current job I've been using another legacy system. Well, my job was to create a relatively modern service for the legacy system to call, but none of the remaining developers knew how to use the extensions of that system that does SOAP calls. So I had to learn just enough of that legacy system to hold their hands through the parts that call my service. Kind of fun, to be honest!
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The dot net framework was ported to Windows 95/98 so they can use more software now.
Stuck?
I had a 486DX running DOS for writing and editing CAM programs for CNC mills, lathes, pipe bender, and a laser cutter. And for funsies, an even older Macintosh that booted from a 5 1/4" floppy that ran a CMM, (co-ordinate measuring machine). And the software for the CMM ran from another 5 1/4" floppy.
This was about 2017 before I retired as a toolmaker.