Comment by stared

See also rMarkdown (http://rmarkdown.rstudio.com/) for Markdown supporting LaTeX (and bunch of other things) and its real-time editor editR (https://github.com/swarm-lab/editR).

Or for a longer list/discussion: https://hackpad.com/New-scientific-markup-language-utAjFcYuv... (it includes https://stackedit.io/).