I have stuff I wrote 15 years ago still in daily use from 500+ people to produce news which is seen by tens (hundreds?) of millions of people, last serious deve

I have stuff I wrote 15 years ago still in daily use from 500+ people to produce news which is seen by tens (hundreds?) of millions of people, last serious development on it was 2012, written in perl of course. Another system a colleague wrote from the same time, written in PHP, looks after image archives. I don't believe that's changed much either. There's a lot of infrastructure stuff that dates back 12 years, when we standardised the entire place on ubuntu (804) for linux (and got rid of solaris at the same time). That's all fairly new though. A lot of broadcast equipment still in use store config on 3.5" floppy disks, and I saw a windows 3.1 machine still running in a branch office about 18 months ago.