Although some programming languages truly die - as in nobody uses them - a lot many simply lose developer 'mindshare'. Those languages are no longer the topic o

Although some programming languages truly die - as in nobody uses them - a lot many simply lose developer 'mindshare'. Those languages are no longer the topic of online conversations (other than in niche spaces), and fewer and fewer people write tutorials or books about that language. The language is still in use, but it's time in the limelight has passed. Note: This does not mean the language is bad or inadequate. Anyone in this profession knows that language popularity has no correlation to the quality of the language. In fact, it's a great shame so many interesting ideas from programming history are so easily forgotten (sometimes to be re-discovered again in new languages). I don't think any of the languages you listed will truly die, but eventually their popularity and time in the limelight will also pass. I guess for some developers (perhaps many) that's equivalent to being a dead language.