Am actually interested in this question in a non-snarky way.

Many years ago, I taught lots of programming workshops in academia and managing the student environments was always a pain. So when I heard of replit and similar tools it always seemed to me like a good solution for this problem.

However, I was struck recently when I went back to teaching how little in roads it made in this space, out of 4 universities in the UK (cohorts of 100s) I saw hardly anyone using it or even heard of it.

It seems the preferred option now is to just use google colab, which works great but doesn't give students the feel of a full-blown IDE.

I haven't used it in a while, but it was great for playing around with python ideas as someone who maybe doesn't want to set everything up on their own machine

I've used it occasionally. They provide some online compilers for languages that are hard to find elsewhere, e.g. TCL.