Jeremy Shantz

I made this plugin to help with internal linking on existing sites, existing published content. 
Please feel free to donate if you like my plugin, it will help me feed my dogs and inspire me to add more functionality.
// Rest of your readme.txt file…
<h3>Usage</h3>
Here’s how it works:
You’ll find the plugin under the WordPress Settings menu.
Click on the plugin in the settings menu, and a user screen will appear where you can select (via dropdowns) either a single article or an article category target.
Next, you can select whether or not to include a link to your selected pillar post or page. If you choose Yes, select your preferred pillar post or page from the dropdown.
When you click the button to proceed, the plugin works as follows after selecting either a single article or a category.
a)The plugin will retrieve all the articles in the same category as either the single article you selected or the category you selected. 
b)The plugin will randomly select 6 articles in the same category and create an HTML heading and list of linked titles. It then adds this list to either the end of the single article or performs the same action on all articles in the category selected. 
c)If you selected Yes for pillar content, and you’ve selected the target post or page as the pillar, the plugin will proceed to add the title of your selected post or page as a bolded first item of the links list.
<h3>Donate</h3>
Support the development of this plugin by making a donation: https://www.paypal.com/donate/?hosted_button_id=RRN3SPBMJZT4G

Add Internal Links Lite

Add internal links to the end of a selected article's content or all articles in a selected category.

makong

Looking for the best internal linking plugin for WordPress? Look no further!
Everyone who involved in SEO knows about link building importance for getting higher rankings in Google, Bing or any other Search Engine. But really good SEOs know that internal linking is something you should not avoid. Look at Wikipedia website, their interlinking is something you need to be jealous about.
Why do you need internal links on your site? 
Because it helps you to give more contextual credits to the pages of your site, connecting them with relevant keywords.
Why to use Internal Links Generator for internal linking?
<ul>
<li>It is created by SEOs for SEOs</li>
<li>It has a few cool features you won’t find anywhere else</li>
<li>It has “noob” level easy setup</li>
<li>It works</li>
</ul>
What cool features Internal Links Generator has?
<ul>
<li>It counts how many times keywords from you list is found in your content (so you will what keywords from the list your content is lacking).</li>
<li>You can set the limit for keyword usage in your internal links (keyword priority setup, we all know that keywords are not equal).</li>
<li>You prepare everything in your beloved spreadsheets, then just import it! </li>
<li>You are able to find the keywords you want to link within the content of your website.</li>
<li>You can manually set how many words to look for before and after your keyword, which can help you find not only particular keywords but the surrounding words as well. That means that you can create a lot more variations of your anchor texts (remember: Google loves diversification in anchor texts).</li>
</ul>
So, are you ready to boost your internal WordPress SEO with Internal Links Generator? 
Don’t hesitate, hit download !
And don’t forget to leave your comments or ideas!  
We’ll gladly improve it for you!

Internal Links Generator

Looking at actual code of this plugin it's very clean.  No extra shortcodes or crap to slow down the site.  JS is compressed and css isn't too general to cludge up existing styles.
The UI is very straightforward and offers several ways to do what you want.  You define your own workflow and load keywords / target_urls however you prefer.
Works a helluva lot better than many of the other solutions without requiring a "pro" version.



Built well, simple ui and works

Simple way to automatically link a certain word or phrase in your post/page/custom content to a URL you specify.

Add Internal Links Lite vs Internal Links Generator