Matteo Enna

My Wine Repository

Taxonomy Meta Box Filter enhances the WordPress admin interface by adding a simple search field above each taxonomy metabox. 
It supports default taxonomies (like categories and tags), as well as custom taxonomies and custom post types (CPTs).
Perfect for sites with a large number of terms, allowing you to quickly find and select the ones you need while editing posts.
<h3>Features</h3>
<ul>
<li>Search field added to every taxonomy metabox</li>
<li>Works with hierarchical (categories) and non-hierarchical (tags) taxonomies</li>
<li>Compatible with custom taxonomies and CPTs</li>
<li>Script only loads on the <code>post</code> and <code>post-new</code> admin screens</li>
<li>Fully translatable</li>
</ul>
<h3>License</h3>
This plugin is licensed under the GNU General Public License v2 or later.

Taxonomy Meta Box Filter – Search taxonomies from the editor

Adds a search field above each taxonomy metabox in the post editor, making it easier to manage categories, tags, and custom 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 Meta Box Filter – Search taxonomies from the editor vs Simple Taxonomy