Luc André

By default, WordPress adds a base prefix to taxonomy URLs — <code>/category/</code>, <code>/tag/</code>, or any custom taxonomy base. This plugin removes those prefixes and replaces them with breadcrumb-style paths built directly from the term hierarchy, giving clean, readable URLs that reflect the content structure:
<pre><code>/parent-term/child-term/post-slug/
</code></pre>
For custom post types associated with a taxonomy, the full term path is used as the permalink base. For non-hierarchical taxonomies, only the term slug is used.
It supports:
<ul>
<li>Hierarchical and non-hierarchical taxonomies</li>
<li>Custom post type permalinks built from associated taxonomy term paths</li>
<li>Automatic detection of public taxonomies (including <code>category</code> and <code>post_tag</code>) and CPTs</li>
<li>Configuration via filter for fine-grained control</li>
</ul>
The plugin works at the permalink and rewrite layer and does not modify stored slugs or post content.

Libre Breadcrumb Permalinks

Removes taxonomy base prefixes and builds breadcrumb-style permalinks from term hierarchies.

jim912

This plugin adds the function to display breadcrumbs (topic path) navigation. You can use display styles, lots of parameters of styles and original plugin hooks of breadcrumbs navigation, and you can customize navigations flexibly.
<h4>Examples</h4>
Default 
Template Tag
<pre><code><?php if ( function_exists( 'bread_crumb' ) ) { bread_crumb(); } ?>
</code></pre>
Output sample
<pre><code><ul class="bread_crumb">
 <li class="level-1 top"><a href="http://www.example.com/">Home</a></li>
 <li class="level-2 sub"><a href="http://www.example.com/?post_type=seminar">Seminar</a></li>
 <li class="level-3 sub"><a href="http://www.example.com/?area=tokyo">Tokyo</a></li>
 <li class="level-4 sub tail current">WordBench Tokyo</li>
</ul>
</code></pre>
String types 
Template Tag
<pre><code><?php if ( function_exists( 'bread_crumb' ) ) bread_crumb( 'type=string' ); ?>
</code></pre>
Output Sample
<pre><code><a href="http://www.example.com/">Home</a> &amp;gt; <a href="http://www.example.com/?post_type=seminar">Seminar</a> &amp;gt; <a href="http://www.example.com/?area=tokyo">Tokyo</a> &amp;gt; WordBench Tokyo
</code></pre>
CSS Sample
<pre><code>.bread_crumb {
 margin:0;
 border-bottom:1px solid #eee;
 padding:0.8em 0 0.5em;
 clear: both;
 height: 20px;
 background: #f8f8f8;
}
.bread_crumb li {
 font-size:12px;
 color:rgb(180,180,180);
 float:left;
 /*margin-right:1em;*/
 list-style: none outside none;
}
.bread_crumb li:after {
 content : '>';
 padding-left:10px;
 margin-right:10px;
}
.bread_crumb li:last-child:after {
 content : '';
}
.bread_crumb li a {
 color:rgb(120,120,120);
}
.bread_crumb li.current {
}
</code></pre>
<h4>Special Thanks</h4>
English Translation:<a href="http://www.odysseygate.com/" title="Translation" rel="nofollow ugc">Odyssey</a>
<h3>Links</h3>
“<a href="https://wordpress.org/extend/plugins/ps-taxonomy-expander/" title="WordPress sitemap plugin">PS Taxonomy Expander</a>” makes categories, tags and custom taxonomies more useful.
“<a href="https://wordpress.org/extend/plugins/ps-auto-sitemap/" title="WordPress sitemap plugin">PS Auto Sitemap</a>” is a plugin automatically generates a site map page from your WordPress site. 
It is easy to install for beginners and easy to customize for experts. 
It can change the settings of the display of the lists from administration page, several neat CSS skins for the site map tree are prepared.
“<a href="https://wordpress.org/extend/plugins/ps-disable-auto-formatting/" title="WordPress formatting plugin">PS Disable Auto Formatting</a>” 
Stops the automatic forming and the HTML tag removal in the html mode of WordPress, and generates a natural paragraph and changing line.
“<a href="http://www.prime-strategy.co.jp/" title="CMS service with WordPress" rel="nofollow ugc">CMS service with WordPress</a>” provides you service that uses WordPress as a CMS.

Prime Strategy Bread Crumb

Adds the function to display breadcrumbs navigation.

Libre Breadcrumb Permalinks vs Prime Strategy Bread Crumb