Waterloo Plugins

Tag Cloud Widget adds a simple tag cloud widget that you can use anywhere on your blog. This plugin looks at all your tags and displays them in a widget. The more times a tag is used, the larger the tag is.
Each tag is a link to the tag page (e.g. http://your-site.com/tag/your-tag). This will help with SEO.
Currently, there aren’t any options to customize the tag cloud. It should work well out of the box. In the future, there may be options to customize the widget.

Good

A tag cloud widget with links to your tag pages

biskobe

hityr5yr

This is a Single Cloud variant of 3D WP Tag Cloud. It Creates multiple instances widget that draws and animates an HTML5 canvas based tag cloud. Plugin may rotate 16 types of content:
Pages, Recent Posts, External Links (blogroll), Menus, Blog Archives, List of Authors, Current Page/Post Links, Links from a custom HTML container, Post Tags, Post Categories, 
Portfolio Categories, Portfolio Items, Portfolio Filters, Slider Categories, Slider Items and Accordions.
It Supports 91 shapes:
A CUSTOMER DEFINED, letter A, parabolic ANTENNA, APPLE-1, APPLE-2, AXES, lighthouse BEAM, BALLOON, BALLS, BLACKHOLE, BLOSSOM, BOWTIE, BULB, BUTTERFLY, CANDY, CAPSULE, concentric CIRCLES, 
CROWN, CUBE, CYLINDER that starts off horizontal, CYLINDER that starts off vertical, DANCERS, DIAMINITY, DIAMOND, DNA that starts off horizontal, DNA that starts off vertical, DOMES, 
EARING, EGG, EGG BOX, EXCAVATOR, Christmas FIR, FISH-1, FISH-2, GLASS, GLOBE of rings, HEART, HEXAGON (bee cell), INFINITY-1, INFINITY-2, INSECT, KNOT, LEMON, LISSAJOUS, LOVE, letter M, 
MÖBIUS FAN, MONSTER, letter N, letter O, OWLISH, PEARISH, PEG TOP that starts off horizontal, PEG TOP that starts off vertical, PILLOW, PYRAMID (tetrahedron), RING that starts off 
horizontal, RING that starts off vertical, RINGS knotwork, ROLLER of rings, RIM, ROUNDABOUT, SANDGLASS, SATURN, SPHERE, SPIRAL, SPRING, SQUARE, STAIRCASE, STAR-1, STAR-2, STARWARS-1, 
STARWARS-2, STARWARS-3, STARWARS-4, STOOL, TEARDROP, TIRE, TORUS, TOWER of rings, TRIANGLE, UFO, letter V, letter W, WALL-E’S EYES, WALNUT, WINGS, letter X, letter Y, YIN YANGISH and 
letter Z(S).
3D WP Tag Cloud-S requires at least WP 4.8 and possesses following Main Features:
<ul>
<li>Allows adding tag clouds via Shortcode.</li>
<li>Supports multiple shape selection for automatic shape transitions during rotation.</li>
<li>Alows different ways of tags distribution on a shape (option ‘Magic’) and supports multipe magic selection for automatic transitions during rotation.</li>
<li>Able to rotate clouds around all three axes.</li>
<li>Option values are preset and don’t have to be typed but selected.</li>
<li>Multiple fonts, multiple colors and multiple backgrounds can be applied to the cloud content.</li>
<li>Full variety of fonts from Google Font Library is available.</li>
<li>Allows creating clouds of images.</li>
<li>In case of Recent posts, Pages, Menu, List of Authors, External Links (blogroll), Current Page/Post Links and Custom HTML container tags may consist of both image and text.</li>
<li>Gives an option to put images and/or text in the center of the cloud. – Accepts background images as well.</li>
<li>The Number of tags in the cloud is adjustable.</li>
<li>Allows showing number of posts in a category tag and number of posts where a post tag is used.</li>
<li>Automatically includes WP Links panel for users who started using WP since v 3.5, when Links Manager and blogroll were made hidden by default.</li>
<li>Uses Graham Breach’s Javascript class TagCanvas v. 2.9 and includes all of its 80+ options in the Control Panel Settings.</li>
</ul>
For adding tag clouds outside sidebars via Shortcode:
<ol>
<li>Go to ‘Widgets’ page of your WP Admin Panel and open the widget. </li>
<li>Set the options for your cloud and save that widget instance in ‘Inactive Widgets’.</li>
<li>A message with a Shortcode for adding the cloud in a page/post will pop up.</li>
<li>Copy & Paste it where you want it to appear.</li>
<li>For a later use the Shortcode will be available at the top of that widget instance in ‘WIDGET OPTIONS’ section.</li>
</ol>

3D WP Tag Cloud-S

3D WP Tag Cloud-S draws and animates an HTML5 canvas based tag cloud.

Tag Cloud Widget vs 3D WP Tag Cloud-S