Bootstrap grid widget for CKEditor >= 4.3 It depends on ckeditor widget plugin. http://ckeditor.com/addon/widget It only works properly with bootstrap 3 enabled websites since otherwise it is just some html. Demo video https://www.youtube.com/watch?v=Up7egPLxfdI
I do reccomend to use http://ckeditor.com/builder for non development purposes.
##Other Bootstrap 3 software for CKEditor 4
Bootstrap 3 Quicktable https://github.com/kaido24/btquicktable
Bootstrap 3 grid https://github.com/kaido24/bt_table
Bootstrap 3 link button https://github.com/kaido24/bt_link_btn