Patricio T

Instead of do it manually, write your post and add your tags. Automatically, this plugin will scan the content of your post and will create links to your tags pages.
In this way, each time a term appears in your post, it will contain a link which will be good for SEO purposes.

Auto Link Tags

Create automatic links to your tags in your posts.

Mahmoud Hamed

Automath Link Builder adds smart internal link suggestions, auto links, and concise link reports for WordPress.
The plugin helps you discover linking opportunities, organize repeated link patterns, and review important content signals such as orphan posts and outbound links.
Features:
<ul>
<li>Internal-link suggestions based on post titles and focus phrases.</li>
<li>One-click insertion for selected internal-link suggestions.</li>
<li>Auto-link rules for repeated keywords and phrases.</li>
<li>Internal and external link reports for tracked content.</li>
<li>Orphan-post detection based on inbound internal links.</li>
<li>Focus phrase support for supported post types.</li>
<li>Import and export for plugin settings and auto-link rules.</li>
<li>Extensible indexing support for custom content sources.</li>
</ul>

Automath Link Builder

Automath Link Builder helps WordPress site owners build stronger internal links, manage auto-link rules, and review link health from one dashboard.

Auto Link Tags vs Automath Link Builder