On the C++ front, I've been using this and love it - https://github.com/ArthurSonzogni/FTXUI - it also has wasm target, so may target the web.

I'm regular Far Commander on Windows, and Midnight Commander, also known as mc on Linux/OSX. In fact my "Command-Prompt" on Windows is always FAR (this comes with certain limitations, but I'm so used to it, I can't do my normal work without it). I could never get into the Explorer, and only use it in rare cases.