Comment by adambrenecki

Wagtail has a similar sort of thing, inspired by Sir Trevor I think, called StreamField; it still has to have a RichTextBlock type to support inline-level formatting (bold, italic, links, etc.) Currently it's either CKEditor or TinyMCE (I forget which) but they're replacing it with something implemented using Draft.js and serialised as JSON, which isn't far off what ProseMirror or this new CKE version do as far as I can tell.