Is there a ready-made toolbar with TeX commands?

Question

TeX

There was a need to implement a small web editor for TeX markup. It is a regular text field (textarea) and a "floating" panel with TeX-commands.

Is there already a ready-made similar panel to use in your project?

Answer 1

https://github.com/sagemathinc/cocalc
https://github.com/overleaf/overleaf
See for yourself what opportunities there are. I don't use online editors.