additional-tags vs Unfiltered MU

Hi,

Is there any difference between the additional-tags & the Unfiltered MU plugins?

Thanks.

https://premium.wpmudev.org/project/additional-tags
Well, consider that fixed... this plugin simply allows users to add additional tags (embed, iframe, etc) to be used when writing a post or page (in their html tab).

http://wordpress.org/extend/plugins/unfiltered-mu/
Unfiltered MU gives Administrators and Editors the unfiltered_html capability. This prevents WordPress MU from stripping <iframe>, <embed>, etc. from these users' posts.

The plugin can either be used globally for your entire MU site, or it can be applied on a blog-by-blog basis.