I built something very similar a while ago: https://github.com/ghinda/jotted https://github.com/ghinda/jotted I'd say it's more lightweight by default (it's no

I built something very similar a while ago: https://github.com/ghinda/jotted https://github.com/ghinda/jotted I'd say it's more lightweight by default (it's not mandatory to use an editor like CodeMirror) and more flexible because of the plugin system (there are plugins for using Ace or CodeMirror as editors, or for compiling ES6, CoffeeScript, Less, Stylus, Markdown). It also has a Console plugin, like the one in devtools, that makes it work like klipse. https://twitter.com/ghindas/status/697790917302996993 https://twitter.com/ghindas/status/697790917302996993 There are a bunch of demos on the site: https://ghinda.net/jotted/#demos https://ghinda.net/jotted/#demos