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WP-Cirrus is a plugin that displays a 3D tag cloud in your WordPress. It can be 
used as a widget or anywhere on your blog using the [wp-cirrus] code.
WP-Cirrus was inspired by the famous WP-Cumulus plugin. WP-Cirrus uses no Flash, 
but only JavaScript and CSS to display the cloud. It gets all meta tags directly 
from WordPress.
Our plugin makes no use of external libraries that have to be loaded with it at runtime 
(e.g. jQuery or even Flash). This makes it very small and fast to load.
As it’s still under development more releases will be seen in near future.
Have fun and tell us what you think about it.

WP-Cirrus

A 3D JavaScript tagcloud inspired by WP-Cumulus.

The Krotek

Customizable widget and shortcode to display tag cloud anywhere you want. You can use it as standard tag cloud widget, as shortcode in any post or page, or both ways. Tons of options allow you to fine tune cloud layout to your needs.
STANDARD FEATURES
<ul>
<li>Display list of post, category or link category tags.</li>
<li>Define number of tags to be displayed.</li>
<li>Set custom tag separator.</li>
<li>Select tag taxonomy: posts, categories or link categories.</li>
<li>Choose cloud mode: shortcode only, widget only or both.</li>
</ul>
PREMIUM FEATURES
<ul>
<li>Define smallest and largest tag size.</li>
<li>Select size unit: px, pt, em or percent.</li>
<li>Choose layout: standard flat cloud or unordered list.</li>
<li>Order tags by name or count.</li>
<li>Sort tags ascending, descending or randomize.</li>
<li>Define list of tags to exclude from cloud or include only.</li>
</ul>
You can purchase Premium version <a href="https://thekrotek.com/wordpress-extensions/tag-cloud" rel="nofollow ugc">here</a>.

Custom Tag Cloud

...but it at least is a little better than the one that comes with WordPress.

Free version is not very customizable...

Customizable widget and shortcode to display tag cloud anywhere you want.

WP-Cirrus vs Custom Tag Cloud