Website development is expanding in complexity, popularity and in the amount of tools available to use for development.
Magazines, forums and such are now and then asking this same question, but not often with the possibility or means for collecting trustworthy answers. I figure this community might be able to at least reveal tendencies within the area.
So, are there any individual tools or full technology stacks used today for website development which can be regarded as "dying"? For what reason? What are the consequences?
EDIT: A close-vote. Would appreciate a comment clarifying what's wrong with the post..