Earl Evan Amante

This is a very simple plugin that will convert the taxonomy/category description textarea to a WYSIWYG (TinyMCE) form. 
Once active, it will convert the textarea field in the create new and edit page of a taxonomy/category to a WYSIWYG or standard WP content form.

Simple Taxonomy WYSIWYG

A very simple plugin that will convert the taxonomy/category description textarea to a WYSIWYG (TinyMCE) form.

kamiel79

Adding tags on the fly by just prepending a word you want to use as a tag with a “#” was a functionality I missed in the WordPress backend.

Tag With Hash

I'll give 5 rating if this plugin updated and works

Not works

Automatically turn terms into tags if you precede them with a #. Nonexisting tags are created.

Simple Taxonomy WYSIWYG vs Tag With Hash