Aaron D. Campbell

<p>This plugin allows you to manually enter links that are related to a post.  They<br />
can be on any site and you can enter just the URL or an entire link (specifying<br />
the title attribute, onclicks, etc).  There are helper functions to display them<br />
in your theme or you can simply tell the plugin to automatically add them to<br />
posts or even just single posts.  The list is output as an unordered list (ul)<br />
with an optional title, and everything has CSS classes to make styling easy.<br />
Requires PHP5.</p>


Manual Related Links

A related links plugin that allows you to manually specify links, even if they're on another site. Requires PHP5.

AMIMOTO

horike

wokamoto

Kazuto Takeshita

webnist

gatespace

<p>*Related posts based on categories, tags.<br />
*Can be replaced and sort of related posts at admin screen.<br />
*I can be added as an add-on another related posts algorithm.</p>
<p>You can make addon to use <a href="https://github.com/horike37/wp-simple-related-posts-addon-template/" rel="nofollow ugc">Addon Template</a>.</p>
<p>You can use JSON REST API Endpoint. Require plugin <a href="https://wordpress.org/plugins/json-rest-api/" rel="ugc">JSON REST API</a><br />
    http://example.com/wp-json/posts/%post_id%/sirp_related/<br />
    http://example.com/wp-json/sirp_related/%post_id%/<br />
    http://example.com/wp-json/sirp_related/%post_id%/?filter[num]=5</p>
<h4>Translators</h4>
<ul>
<li>Japanese(ja) – <a href="https://profiles.wordpress.org/horike" rel="nofollow ugc">Horike Takahiro</a></li>
<li>Thai(th_TH) – <a href="http://www.xn--12cg1cxchd0a2gzc1c5d5a.com" rel="nofollow ugc">TG Knowledge</a></li>
</ul>
<h4>Contributors</h4>
<ul>
<li>@<a href="https://profiles.wordpress.org/shinichin" rel="nofollow ugc">ShinichiN</a></li>
<li>@<a href="https://profiles.wordpress.org/webnist" rel="nofollow ugc">Webnist</a></li>
<li>@<a href="https://profiles.wordpress.org/mt8biz" rel="nofollow ugc">mt8biz</a></li>
</ul>


WP Simple Related Posts

Related Posts plugin. It's flexible and fast and simple.

Manual Related Links vs WP Simple Related Posts