Igor Golovanov

WP Term Metadata Plugin for retrieving and manipulating metadata of term objects. Metadata for 
an object is a represented by a simple key-value pair. Objects may contain multiple metadata 
entries that share the same key and differ only in their value.
= Plugin provides new API functions:
<ul>
<li>add_term_meta() – Add meta data field to a term.</li>
<li>delete_term_meta() – Remove meta data matching criteria from a term.</li>
<li>get_term_meta() – Retrieve term meta field for a term.</li>
<li>
update_term_meta() – Update term meta field based on term ID.
</li>
<li>
add_term_taxonomy_meta() – Add meta data field to a term based on taxonomy name.
</li>
<li>delete_term_taxonomy_meta() – Remove meta data matching criteria from a term based on taxonomy name.</li>
<li>get_term_taxonomy_meta() – Retrieve term meta field for a term based on taxonomy name.</li>
<li>update_term_taxonomy_meta() – Update term meta field based on term ID and taxonomy name.</li>
</ul>

WP Term Metadata

WP Term Metadata Plugin for retrieving and manipulating metadata of term objects.

John James Jacoby

Pretty icons for categories, tags, and other taxonomy terms
WP Term Icons allows users to assign icons to any visible category, tag, or taxonomy term using a fancy icon picker, providing a customized look for their taxonomy terms.
<h4>Also checkout</h4>
<ul>
<li><a href="https://wordpress.org/plugins/wp-term-order/" title="Sort taxonomy terms, your way." rel="ugc">Term Order</a></li>
<li><a href="https://wordpress.org/plugins/wp-term-colors/" title="Pretty colors for categories, tags, and other taxonomy terms." rel="ugc">Term Colors</a></li>
<li><a href="https://wordpress.org/plugins/wp-term-visibility/" title="Visibilities for categories, tags, and other taxonomy terms." rel="ugc">Term Visibility</a></li>
<li><a href="https://wordpress.org/plugins/wp-user-groups/" title="Group users together with taxonomies & terms." rel="ugc">User Groups</a></li>
<li><a href="https://wordpress.org/plugins/wp-user-profiles/" title="The sophisticated way to edit users in WordPress." rel="ugc">User Profiles</a></li>
</ul>

WP Term Icons

Pretty icons for categories, tags, and other taxonomy terms

WP Term Metadata vs WP Term Icons