I was recently amazed to find out that Windows 95 is still used in an industrial automation setting. The company uses the NetBEUI[0] protocol and Windows 95 is apparently the only version to support it. [0] https://en.wikipedia.org/wiki/NetBIOS_Frames_protocol
Trivia about this machine: on the corner of one control board there was a single, green indicator LED with a broken lead. It was bent over so the broken part would still contact the solder joint and light up. If at any point it stopped making contact with the circuit, the entire machine locked up or threw random error codes until you wiggled it back into place.
"We'll fix it later"