tkadle is a TclTk AsciiDoc List Editor...and more since markdown has also been implemented.
The base widget is a ttk::treeview and the output is a proper asciidoc/markdown formatted file containing only list items. List navigation is best done by arrow keys, but may also be done with mouse. The application icon is created during run time. HTML previews may be created on demand. A help dialog is available with <F1>.
As of this posting, tkadle is linux only and serves the primary purpose of editing my agenda / archive / and todo notes.