So, the criteria for a new language is as follows:
-Must be fast and powerful like C++ (my, do I love C++)
-Must run well on repl.it because that's what I do most of my coding on
-Must be widely used (I want something with a lot of potential applications)
I've come up with two potential candidates on my own:
-The classic HTML/CSS/JS combo
Both of which I have done a bit with in the past, especially JS. I've forgotten it, though, because it's been a good three years since I did anything with it.
But yes any suggestions would be GREATLY appreciated :)