Amaury Balmer

For WordPress 2.3 and upper : Please try and use <a href="https://wordpress.org/extend/plugins/simple-tags/" title="The best tagging plugin for WordPress 2.3 !">Simple Tags Plugins</a>
The two mostly used tagging plugins are the Ultimate Tag Worrior (UTW) and Jerome’s Keywords.
I think most people use UTW, however especially its performance has been criticized in the past. Also, it does not provide a auto-complete type-ahead dropdown menu when tagging posts but it always displays all tags of the entire WordPress installation which can be quite annoying if you have really many tags.
Jerome’s Keywords is unfortunately still in beta and it seems that the project will not be continued.
With Simple Tagging Plugin, I’ve coded another tagging plugin for WordPress which is based on Jerome’s Keywords plugin and can ”’import”’ all your tags from UTW or Jerome.
It provides you with everything you need for tagging, in the following a list of the features:
<ol>
<li>Import your tags from UTW or Jerome’s Keywords</li>
<li>A field for tagging your posts easily incl. type-ahead feature</li>
<li>Display Tags of the current posts</li>
<li>A tag cloud with various options</li>
<li>Displaying a list of related posts</li>
<li>Related Tags feature when browsing your tags (idea stolen from del.icio.us)</li>
<li>Adding tags (& categories if enabled in the options) as meta keywords in the header</li>
<li>Adding tags as categories in the feed (this will index your tags with Technorati)</li>
<li>Tag management: rename tags, delete tags, replace tags, convert categories to tags, etc.</li>
<li>Support of embedded tags ([tags]tag1, tag2, tag3[/tags]): You can tag posts directly by entering the tags in the post using [tags]tag1, tag2, tag3[/tags]. This makes it possible to tag posts when you use an external blogging application like BlogDesk or Windows Live Writer.</li>
<li>A feed (RSS, RSS2, Atom) for any tag</li>
<li>Tag cloud for specific category</li>
<li>Automatically display the tags of a post after the post content</li>
<li>Generate Tag Tabs with jQuery !</li>
<li>Manage Tags Cloud in FULL WordPress Mu Site !</li>
<li>List posts from all blogs for a specific tags in WordPress Mu !</li>
<li>Edit mass tags ! 20 posts at the same time !</li>
</ol>
And more…
<h3>Arbitrary section</h3>
New in version 1.7: 
 * Reorganise Admin Options 
 * Add Tag Tabs 
 * Fix lots of bugs. 
 * Fix test $wp_version 
 * Atom Feed fix 
 * Add mass edit tags ! 
 * Fix a security problem
New in version 1.6.8.1: 
 * Fix a important bug with related posts
New in version 1.6.8: 
 * Fix bugs version 1.6.7 
 * Fix wrong counter tags 
 * Admin bugs. (checked) 
 * Minor optimisation 
 * Site wide tag cloud for WordPress Mu + List of posts. 
 * Add translation: Russian & Czech
New in version 1.6.7: 
 * Fix bugs version 1.6.6 
 * Compatibility with MySQL 4.0 
 * Optimisation
New in version 1.6.6: 
 * Add auto color tags cloud (no CSS, Colorpicker in admin) 
 * Add Turkish translation 
 * An option to limit the number of related tags 
 * A possibility to call/display the related posts outside a loop 
 * Tags Feed 
 * limit the age of what posts show up in the tag cloud 
 * An option to automatically display the tags of a post after the post content 
 * Limit or exclude category or categories in Tag Cloud 
 * Ability to exclude specific categories from the related posts 
 * Tag Cloud for one category
New in version 1.6.2: 
 * Related Posts now work…
New in version 1.6.1: 
 * Internationalisation (french, english, german) 
 * Compatibility with WPmu

Simple Tagging

For WordPress 2.3 and upper : Please try and use [Simple Tags Plugins](http://wordpress.org/extend/plugins/simple-tags/ "The best tagging plugin  …

WPKube

The plugin renders a tag cloud using a professionally designed tag image as a background.
The plugin’s tag cloud is completely responsive and is correctly rendered in all browsers.
The primary application of this feature is through the “Cool Tag Cloud” widget, but you can also use the shortcode [cool_tag_cloud] to display the tag cloud anywhere where shortcodes are supported.
Here is the list of parameters that can be used with the shortcode, each with its own set of potential values (which are separated by the | symbol):
<ul>
<li><code>style="default|silver|green|red|blue|brown|purple|cyan|lime|black"</code></li>
<li><code>font_family="Arial, Helvetica, sans-serif"</code></li>
<li><code>smallest="10"</code></li>
<li><code>largest="10"</code></li>
<li><code>align="left|right"</code></li>
<li><code>font_weight="normal|bold"</code></li>
<li><code>text_transform="none|uppercase|lowercase|capitalize"</code></li>
<li><code>number="20"</code></li>
<li><code>order_by="name|count"</code></li>
<li><code>order="ASC|DESC|RAND"</code></li>
<li><code>taxonomy="post_tag"</code></li>
<li><code>nofollow="yes|no"</code></li>
<li><code>animation="yes|no"</code></li>
<li><code>on_single_display="global|local"</code></li>
<li><code>on_archive_display="all|children|siblings|descendants"</code></li>
<li><code>exclude="1,2,3"</code></li>
<li><code>include="1,2,3"</code></li>
</ul>
If you liked my plugin, please rate it.
Special thanks to <a href="http://www.premiumpixels.com/freebies/tagtastic-tag-cloud-psd/" rel="nofollow ugc">Orman Clark</a> for the tag image and to <a href="http://dimox.name/beautiful-tags-markup/" rel="nofollow ugc">Dimox</a> for the CSS code.
This plugin is maintained by <a href="https://www.wpkube.com" rel="nofollow ugc">WPKube</a>, a WordPress resource site where you can find helpful guides like how to <a href="https://www.wpkube.com/list-building-wordpress-plugins/" rel="nofollow ugc">choose the right list building plugin</a>, <a href="https://www.wpkube.com/install-wordpress" rel="nofollow ugc">how to install WordPress</a>, <a href="https://www.wpkube.com/best-wordpress-hosting/" rel="nofollow ugc">choose the best WordPress hosting</a>, and more. 
They also have a huge collection of <a href="https://www.wpkube.com/coupons/" rel="nofollow ugc">exclusive deals</a> on various plugins and hosting services such as <a href="https://www.wpkube.com/coupons/wpengine-coupon/" rel="nofollow ugc">WPEngine</a>, <a href="https://www.wpkube.com/coupons/siteground-coupon/" rel="nofollow ugc">SiteGround</a>, etc.

Cool Tag Cloud

This came as a blessing when I had written some custom code to show a custom Taxonomy cloud on sidebar. The options to customize are so cool, and I love the option to either show the taxonomy related to a post on a Single post page or all tags, that makes it so versatile. Thanks so much to the author.

Simple Tagging vs Cool Tag Cloud