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.

Flector

“HTML5 Cumulus” is a modern (HTML5 canvas tag based) version of the classic old “WP-Cumulus” plugin.
The plugin’s widget gives you a nice-looking 3D tag cloud in the sidebar that will work in all modern browsers, including mobile ones.
<a href="https://html5-cumulus.ru" rel="nofollow ugc">DEMO</a>
If you liked my plugin, please rate it.
The plugin uses <a href="http://www.goat1000.com/tagcanvas.php" rel="nofollow ugc">TagCanvas</a> jQuery plugin by Graham Breach.

HTML5 Cumulus

сам себя не похвалишь :)

cool :)

A modern (HTML5) version of the classic “WP-Cumulus” plugin.

Author Tag Cloud vs HTML5 Cumulus