pantsonhead

Categories and Tags are tricky – sometimes they take a bit of experimentation to get right, and when we change the way we want to do things and we end up with a mess to clean up. This is when Taxonomy Toolbox can help.
This plugin provides the following tools to help manage your taxonomies:
<ul>
<li>Summarize current Taxonomies</li>
<li>Convert Tags to Categories</li>
<li>Convert Categories to Tags</li>
<li>Delete empty Tags or Categories</li>
<li>Identify and Merge Tags/Categories that exist for the same term</li>
<li>Force a recount of objects associated for all taxonomies</li>
<li>Delete any orphaned data</li>
</ul>

Taxonomy Toolbox

A bit premature for a through review, but when I realized my old stand by Term Management Tools didn't provide for bulk converting tags to categories I was happy to find this... and it worked!



Worked great converting tags to categories

Worked for me to quickly see which custom taxonomies were configured on the site.

Worked for me to see which custom taxonomies were configured on the site.

Taxonomy Toolbox allows you to quickly review and update your Categories, Tags and other taxonomies.

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 Toolbox vs Simple Taxonomy