Erwan Guillon

Activate the plugin and add some code to your functions.php
Basic function :
<ul>
<li>AyTermMeta::addMeta($term, $name, $label, $type = ‘input’, $description = ”, $options = array()) {} Generate all meta management in WordPress Admin</li>
</ul>
Advanced functions :
You can use term_meta functions similar to post_meta function to add / update / get / delete metas
<ul>
<li>function add_term_meta( $term_id, $meta_key, $meta_value, $unique = false ) {}</li>
<li>function update_term_meta( $term_id, $meta_key, $meta_value, $prev_value = ” ) {}</li>
<li>function get_term_meta( $term_id, $key = ”, $single = false ) {}</li>
<li>function delete_term_meta( $term_id, $meta_key, $meta_value = ” ) {}</li>
</ul>

AY Term Meta

Add some meta to your terms like tags, categories or custom taxonomies

Evan Herman

Tracy Levesque

yikesitskevin

karmadharma

Order all of the taxonomy terms on your site with a simple to use, intuitive drag and drop interface. The plugin works for WordPress core taxonomies — Categories and Tags — and any custom taxonomies you have created.
Activate the plugin, enable your taxonomy on the settings page, and drag and drop the taxonomies into the desired position. It couldn’t be easier.
On the front end of the site your taxonomy terms will display in the order set in the dashboard.
Requires WordPress 4.4 or later due to the use of the term meta. 
Query Usage
<ul>
<li>If you’re trying to query for taxonomy terms (e.g. using <code>WP_Query</code> or functions like <code>get_terms()</code>), and you’d like them to be returned in the order specified by the plugin, you need to add the tax_position parameter in your call. For example: <code>'meta_key' => 'tax_position'</code> and <code>'orderby' => 'tax_position'</code>. Thanks to @certainlyakey on GitHub for pointing this out.</li>
</ul>

Simple Taxonomy Ordering

I think this is the easiest/best custom Taxonomy order plugin, as it keeps it within the same WordPress admin screen, does not create its own page. 

Simple

Works like a charm - use it

The best drag&drop ordering of terms so far.

Thanks so much!!

Quickly and easily reorder taxonomy terms with an easy to use and intuitive drag and drop interface.

AY Term Meta vs Simple Taxonomy Ordering