dvddemattia

<p>Free and easy to use plugin that allow you to add a list of related posts for each post, including Custom Post Types.</p>
<h3>Features And Options:</h3>
<ul>
<li>Add relations between posts.</li>
<li>Set number of related posts (1-20).</li>
<li>Custom title and custom template path.</li>
<li>Working with shortcode [cptrp].</li>
<li>Simple and free.</li>
<li>More features coming on updates.</li>
</ul>


CPTRP

Plugin that allow you to add a list of related posts for each post, including Custom Post Types.

nasznjoka

<p>Show Category parents and sub categories of the same parent of the current post/page’s category on the sidebar of a single post or a page or an archive, highlight the current subcategory the post is in<br />
and unlike most of similar plugins out there, this one shows where the user is from, where he/she is and where to go<br />
this is helpful for navigation and the overall user experience. Inspired by the problem i was facing when doing a client’s site and i think many of you<br />
out there meet the same challenges</p>


Category Family Tree

Show Category ancestors and sub categories on the sidebar

CPTRP vs Category Family Tree