I've never done anything serious in Forth, but I was first exposed to it in the late 80s, and keep coming back to it.

Over the past couple of years I've written, and thrown away, several implementations of Forth in C, C++, and Perl. I've even had it running, embedded, on ESP8266 devices.

It continues to be something I enjoy toying with, but equally something I can't find a perfect use for.