shawfactor

Quickly increase your readers’ engagement by adding related posts to the bottom of your post content.
Posts with the most terms in common will display at the top!
This plugin is capable of finding related posts in multiple taxonomies and post types. Include or exclude terms from the search for related posts. Change the look and feel by using your own templates in your (child) theme.
Additionally this plugin allows you to override the related posts that are automatically generated and choose your own related posts.
Requires wp_body_open
Note this plugin requires wordpress 5.2 and for your theme to support the wp_body_open hook (most good themes do).
Like this plugin? Please consider <a href="https://wordpress.org/support/view/plugin-reviews/lh-related-posts-by-taxonomy/" rel="ugc">leaving a 5-star review</a>.
Love this plugin or want to help the LocalHero Project? Please consider <a href="https://lhero.org/portfolio/lh-related-posts-by-taxonomy/" rel="nofollow ugc">making a donation</a>.
Plugin features:
<ul>
<li>Small Footprint. Unlike many other related post plugins this will have a minimal impact on site speed!</li>
<li>Highly Adjustable layout!</li>
<li>The ability to optionally manually set the related posts for each post in the post edit screen.</li>
</ul>

LH Related Posts by Taxonomy

A lightweight decisions not options related posts plugin.

RobMarsh

The Post-Plugin Library does nothing by itself but must be installed to provide shared code for the <a href="https://wordpress.org/extend/plugins/similar-posts/" rel="ugc">Similar Posts</a>, <a href="https://wordpress.org/extend/plugins/recent-posts-plugin/" rel="ugc">Recent Posts</a>, <a href="https://wordpress.org/extend/plugins/random-posts-plugin/" rel="ugc">Random Posts</a>, <a href="https://wordpress.org/extend/plugins/popular-posts-plugin/" rel="ugc">Popular Posts</a>, and <a href="https://wordpress.org/extend/plugins/recent-comments-plugin/" rel="ugc">Recent Comments</a> plugins.
<h3>Version History</h3>
<ul>
<li>2.6.2.1
<ul>
<li>support for recent comments to only show one comment per post</li>
<li>fix for donate link</li>
</ul>
</li>
<li>2.6.2.0
<ul>
<li>new {imagealt} output tag — rather like {imagesrc}</li>
<li>{excerpt} can now trim to whole sentences</li>
<li>content filter can now take parameter string</li>
<li>widget can now take parameter string</li>
<li>output can be appended to posts & feeds</li>
</ul>
</li>
<li>2.6.1.0
<ul>
<li>the current post can be marked manually</li>
<li>widgets now honour the option to show no output if list is empty</li>
<li>{commenterlink} now respects the appropriate filter</li>
</ul>
</li>
<li>2.6.0.0
<ul>
<li>version bump to indicate compatibility with WP 2.6</li>
<li>fix to really include attachments</li>
<li>new parameter for {imagesrc} to append a suffix to the image name, e.g. to get the thumbnail for attachments</li>
</ul>
</li>
<li>2.5.0.11
<ul>
<li>new option to include attachments</li>
<li>{php} tag now accepts nested tags</li>
<li>new output tag {authorurl} — permalink to archive of author’s posts</li>
<li>fix for numeric locale issue in Similar Posts</li>
</ul>
</li>
<li>2.5.10
<ul>
<li>new option to select algorithm for term extraction in Similar Posts</li>
<li>new manual links option in Similar Posts</li>
<li>fix for faulty non-English tag indexing in Similar Posts</li>
<li>fix for page selection in old versions of WP</li>
<li>made omit current post try harder to find current post ID</li>
</ul>
</li>
<li>2.5.0.9
<ul>
<li>new option to order Recent Posts by date of last edit rather than date of creation</li>
<li>new option to match the current post’s author</li>
<li>extended options for snippet and excerpt output tags</li>
</ul>
</li>
<li>2.5.0.7
<ul>
<li>new option to show by status, i.e., published/private/draft/future</li>
<li>{categorynames} and {categorylinks} apply ‘single_cat_name’ filter</li>
<li>fixes bug in WP pre-2.2 causing installation code to fail</li>
</ul>
</li>
<li>2.5.0.6
<ul>
<li>bug fix for new option for Recent Comments</li>
</ul>
</li>
<li>2.5.0.5
<ul>
<li>new option for Recent Comments: just_current_post</li>
<li>{snippet} and {commentsnippet} now handle ‘…’</li>
<li>{commentexcerpt} now same parameters as (excerpt}</li>
</ul>
</li>
<li>2.5.0.4
<ul>
<li>{commentpopupurl} targets the correct comment </li>
</ul>
</li>
<li>2.5.0.3
<ul>
<li>bug fix for showing pages when not selected</li>
</ul>
</li>
<li>2.5.0.2
<ul>
<li>{image} tag has even more options</li>
<li>new {commentpopupurl} tag</li>
</ul>
</li>
<li>2.5.0.1
<ul>
<li>made compatible with WP MU</li>
</ul>
</li>
<li>2.5.0
<ul>
<li>{image} has new post, link, and default parameters</li>
<li>new {imagesrc} tag</li>
<li>fix to empty category bug</li>
</ul>
</li>
<li>2.5b28
<ul>
<li>more work on {image} scaling</li>
<li>improvements to Similar Posts matching</li>
<li>experiment with Chinese/Korean/Japanese matching</li>
</ul>
</li>
<li>2.5b27
<ul>
<li>made {image} scaling more robust</li>
</ul>
</li>
<li>2.5b26
<ul>
<li>reverted thumnail serving (speed)</li>
<li>fix current post after extra query</li>
</ul>
</li>
<li>2.5b25
<ul>
<li>option to sort output, group templates</li>
<li>removed ‘trim_before’ option added more logical ‘divider’</li>
<li>{date:raw}, {commentdate:raw}, etc.</li>
<li>fix for {image} resizing when and not </li>
<li>{image} now serves real thumbnails</li>
</ul>
</li>
<li>2.5b24
<ul>
<li>fix for recursive replacement by content filter</li>
<li>fix to {gravatar} to allow for ‘identicon’ etc.</li>
<li>fix to {commenter} to allow trimming</li>
<li>fix a warning in safe mode</li>
</ul>
</li>
<li>2.5b23
<ul>
<li>new option to filter on custom fields</li>
<li>proper nesting of braces in {if} ; also allowed in condition</li>
<li>improved bug report feature</li>
<li>better way to omit user comments</li>
</ul>
</li>
<li>2.5b22
<ul>
<li>show_pages option now possible to show only pages</li>
<li>update for {postviews}</li>
<li>fix {commenterlink} giving no output</li>
</ul>
</li>
<li>2.5b21
<ul>
<li>fix bug in {snippet} stripping</li>
</ul>
</li>
<li>2.5b20
<ul>
<li>fix default behaviour of {gravatar}</li>
</ul>
</li>
<li>2.5b18
<ul>
<li>new tag {if:condition:true:false}</li>
</ul>
</li>
<li>2.5b17
<ul>
<li>enhanced {php}</li>
</ul>
</li>
<li>2.5b16
<ul>
<li>fix submenus to work with Lighter Admin Drop Menu</li>
</ul>
</li>
<li>2.5b15
<ul>
<li>fix bugs, add ‘included posts’ setting</li>
</ul>
</li>
<li>2.5b14
<ul>
<li>enhanced bug reporter</li>
</ul>
</li>
<li>2.5b13
<ul>
<li>added {gravatar}, extended {author}</li>
</ul>
</li>
<li>2.5b11
<ul>
<li>fixed problem with bug reporter</li>
</ul>
</li>
<li>2.5b9
<ul>
<li>clarifying installation instructions</li>
</ul>
</li>
</ul>

Post-Plugin Library

The shared code library for Similar posts, Recent Posts, Random Posts, Popular Posts and Recent Comments.

LH Related Posts by Taxonomy vs Post-Plugin Library