Via HN. If my memory serves me correctly, few years back, someone (a sales dude) used to come to #myoss meetup and talked about Multi-User Multi-Programming System (MUMPS), a programming language with embedded data storage. A very old (since 1966) programming language within a niche domain, mostly in healthcare. Suspect some of the healthcare system in .my are still using it.
I am wondering, what are the other exotic programming languages still being used in here ? For banking industry, I think Cobol and RPG are still quite common. What else?