Comment by robonerd

> Abandoned software that was moderately influential in the past. Hardware that's no longer manufactured and someone wants to memory hole it.

This one is a bit surprising to me. From my perspective, wikipedia seems to have a strong computer nerd bias. There are articles about obscure text editors that have probably only been used by a few dozen people in the last 30 years, but if you try looking up information about industrial/construction hardware (blue collar stuff..) the articles are often very short (when they exist at all) and often don't have history sections.