Coen Jacobs

Makes it easy to display a link to the Creative Commons license you desire in posts and pages.
It adds the following features:
<ul>
<li>Options to add a link to your Creative Commons license under all posts</li>
</ul>
Read more about this plugin on the <a href="http://coenjacobs.net/wordpress/plugins/creative-commons-suite" rel="nofollow ugc">Creative Commons Suite plugin</a> page.

Creative Commons Suite

Makes it easy to display a link to the Creative Commons license you desire in posts and pages.

Haldaug

This plugin adds support for providing licensing information for images uploaded in the media library. The user can input the Creative Commons licensing information in custom fields in the media post. The licensing information is displayed underneath the image in the wp-caption element.
<h4>Credits</h4>
This plugin is based on the code given in the tutorial ‘How to Add Custom Fields to Attachments’ by Guillaume Voisin: <a href="http://wp.tutsplus.com/tutorials/creative-coding/how-to-add-custom-fields-to-attachments/" rel="nofollow ugc">wp.tutsplus.com</a>

Creative Commons Tagger

Adds support for tagging images with creative commons licenses.

Creative Commons Suite vs Creative Commons Tagger