Kumbh Design Inc.

You can set meta tags like keyword, description. You can customize on each individual page/post as well.
<h3>Features</h3>
<ul>
<li>FREE Plugin.</li>
<li>One click to Install.</li>
<li>Simple and Easy to Use</li>
<li>Do not need to edit your theme’s core files.</li>
<li>Quick and supportive.</li>
</ul>

WP Simple Meta Tags

Allows you to set meta tags like keyword, description and you can customize on each individual page/post.

radevican

Meta tags IO generator is an easy to use plugin which serves as one-stop solution to meta tags. You can simply add meta image, site title, description using the dedicated dashboard and the meta tags are auto generated to the <head>.
There other features as well, such as WooCommerce integration to rock your products in social media, independent posts/pages with their own meta such as Post title, post featured image etc.
Great thanks to Sergey Babayan, <a href="https://www.prospectacy.com/author/sergey/" rel="nofollow ugc">Prospectacy Operations Manager</a> for his great feedback to get this done.
Dashboard page: 
Settings -> Meta Tags

Meta tags IO generator

Simple meta tags generator to improve sharing appearance accross search engines and social media.

WP Simple Meta Tags vs Meta tags IO generator