W3netLab Innovations

Taxonomy Extender enhances your WordPress site by:
<ul>
<li>Adding Categories and Tags to Pages: Assign categories and tags to pages just like posts.</li>
<li>Enhanced Categories Widget: Extends the default Categories widget to allow excluding specific categories via checkbox controls.</li>
<li>Enhanced Tag Cloud Widget: Extends the default Tag Cloud widget to allow excluding specific tags via checkbox controls.</li>
</ul>
Features:
<ul>
<li>Assign categories and tags to pages just like posts.</li>
<li>Extends the default Categories widget to allow excluding specific categories via checkbox controls.</li>
<li>Extends the default Tag Cloud widget to allow excluding specific tags via checkbox controls.</li>
<li>Works perfectly out of the box without any additional configuration.</li>
<li>Easy to use and configure.</li>
<li>Follows WordPress coding standards and best practices.</li>
<li>Extend the default WordPress categories and tags without compromising site speed.</li>
</ul>
<h3>License</h3>
This plugin is licensed under the <a href="https://www.gnu.org/licenses/gpl-2.0.html" rel="nofollow ugc">GPLv2 or later</a>.
<h3>Credits</h3>
Developed by W3netLab Innovations.
<h3>Notes</h3>
<ul>
<li>Support: For support, please visit the <a href="https://wordpress.org/support/plugin/taxonomy-extender/" rel="ugc">plugin’s support forum</a>.</li>
<li>Contributions: Contributions are welcome. Please contact the author for more information.</li>
</ul>

Taxonomy Extender For Categories and Tags

Adds category and tag support to pages, and extends the default WordPress Categories and Tag widgets to allow excluding specific categories and tags.

Amaury Balmer

WordPress 3.1 and up allow for reasonably simple custom taxonomy, this plugin makes it even simpler, removing the need for you to write any code.
Add support for taxonomy with or without hierarchical. Choose the selector type for write post.
Allow to add taxonomy to any objects registered on your installation. This plugin can be coupled with the plugin ACF to a new term meta database that allow to create on fly any field need for the taxonomy. For example, for a “Number” taxonomy, you can add fields : number ID, date of parution, screenshot, etc !
This plugin is developped on WordPress 3.5, with the constant WP_DEBUG to TRUE.
This plugin allows you to add taxonomy just by giving them a name and somes options in the backend. It then creates the taxonomy for you, takes care of the URL rewrites, provides a widget you can use to display a “taxonomy cloud” or a list of all the stuff in there, and it allows you to show the taxonomy contents at the end of posts and excerpts as well. 
To boot, it comes with a set of template tags for those who don’t mind adapting their own theme.
For full info go the <a href="https://github.com/herewithme/simple-taxonomy" rel="nofollow ugc">Simple Taxonomy</a> page.

Simple Taxonomy

WordPress 3.1 and up allow for reasonably simple custom taxonomy, this plugin makes it even simpler, removing the need for you to write any code.

Taxonomy Extender For Categories and Tags vs Simple Taxonomy