Casto(http://ca.storyboards.jp/ ) cli tool.
Live coding in browse, using text editor.
$ [sudo] npm install casto -g
$ casto
Usage: casto [options] <file ...>
Options:
-h, --help output usage information
-V, --version output the version number
-b, --browse automatically opens a browser
-s, --stdin STDIN are passed to Casto
-p, --port [port] Port number. (default: 9992)