Massimiliano Farinella wrote #pundok, a visual #editor for #pandoc. The editor is based on pandoc's internal format, so no information is lost when transferring the documents to pandoc for further processing.
The editor is written using #ProseMirror and #Tiptap; it can be included in web pages or be run standalone (via Electron).
https://github.com/massifrg/pundok-editor