WP-CC

Add license terms to your comment form.

An easy to use shortcode for inserting a Creative Commons license image or license block to your posts or pages.

Run your own update server for plugins, themes or any other software: manage packages & licenses, and provide updates to your users.

Adds a meta box to define a template for an Easy Digital Downloads Software License key

It is an add-on of Elite Licenser also WooCommerce. So you must need main app (Elite licenser) to use it.

Sell and manage license keys, serial numbers, gift cards, PIN codes, activation codes, and digital access credentials effortlessly with Key Manager.