I like Tcl. It's still very common in the electronics design industry, and it's a fun language to write things in. Kind of feels halfway in-between LISP and Bas

I like Tcl. It's still very common in the electronics design industry, and it's a fun language to write things in. Kind of feels halfway in-between LISP and Bash. Tcl is also found in Python (weirdly) as the implementation language of Tkinter. It's not exactly a popular language these days, but it has its niches. It has a small runtime with an event loop and a nice GUI extension. It's stable, easy to embed into other programs, easy to write, supports networking and all kinds of OS operations, and has a large body of libraries and examples out there. Its performance is also pretty reasonable these days. These days, I think that Lua and Python are more common as extension languages - and that's totally fine. But there will always be room in my toolbox for Tcl.