If you are looking for a simple to use tag editting plugin, you can checkout the jQuery Tags Input Revisited Plugin. It's an improved and fixed version of the discontinued jQuery Tags Input Plugin originally created by XOXCO.
jQuery Tags Input Revisited Plugin welcomes few very important improvements including: flexbox, style manipulation with CSS classes, HTML5 placeholder, pure CSS remove link, improved validation mechanisms and copy/paste functionality. It also fixes incorrect delimiter management.
Developed as a part of a bigger project for the client.