A new OpenCPU app allows you to knit and markdown in the browser. It has a unique code editor which automatically updates the output after 3 seconds of inactivity. It uses the Ace web editor with
mode-r.js (thanks to RStudio ).
#install the package library(devtools) install_github("markdownapp", "opencpu") #open it in opencpu library(opencpu) opencpu$browse("/library/markdownapp/www")