https://www.mathcha.io/editor https://www.mathcha.io/editor is indeed much closer to TeXmacs than https://latex.codecogs.com/eqneditor/editor.php https://latex

https://www.mathcha.io/editor https://www.mathcha.io/editor is indeed much closer to TeXmacs than https://latex.codecogs.com/eqneditor/editor.php https://latex.codecogs.com/eqneditor/editor.php. No matter how instant the rendering is, the latter is still split-screen. It may not seem like much, but when you are knee-deep in a calculation the advantage of having a single point of focus for your eyes is huge (at least to me).