kegentile

This plugin will create a tag cloud for a specific author. This will allow a visitor on your site to drill deep down into an author’s specific content.
It uses all of the same parameters as wp_tag_cloud(), but adds an additional one for the author_id. When the author_id is passed an integer of a published author that has tagged his or her posts, a tag cloud will be generated.
It will also create a new permalink structure on your site of
www.yoursite.com/author/author-slug/tag/tag-slug
***Note: that you must be using any custom permalink structure for this plugin to function. Also, custom taxonomies is currently not functioning with this version, please look forward for this in a later version.

Author Tag Cloud

Creates a template tag to create an author specific tag cloud and creates a new permalink structure to drill down into content by author and tag.

fox009

The plug-in uses professionally designed tag colors as the background to present the tag cloud.
The tag cloud of the plug-in is fully responsive and correctly rendered in all browsers.
You can customize them with a lot of options and use them.
If you liked the plugin, please rate it.
This plugin is maintained by <a href="http://www.fox009.cn/" rel="nofollow ugc">Fox009</a>, a WordPress resource site.

Fox009 Color Tag Cloud

A beautiful, dynamic and colorful tag cloud.

Author Tag Cloud vs Fox009 Color Tag Cloud