Mumps! There's a couple of docker images floating around out there for playing around in it. If anyone hasn't tried it, it's "fun". M's global data stores, weird scoping, and strange syntax make for some interesting problems :P
Time to relive my Epic glory days. Seriously thanks for sharing these and appreciate your positive attitude.
I’m also an ex-Epic guy! It’s been a while since I played with these (M without EpicStudio is painful), but I think starting my career in M definitely helped me as a developer. Every time I hear someone complain about JS at work I’m like “If you think that’s crazy...”