Prasanna SP

Just like the normal WordPress site feed, wordpress categories and tags also has feeds. The category feed is located at <code>site.url/category/categoryname/feed</code>. This plugin automatically adds the RSS feed link to the current post categories after the post content. By default the plugin shows category feed link on single posts. You can change it’s settings to show it on other pages, such as archives as well. You can change it’s title in WP-Admin –> Settings –> Follow Category Feeds.
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Follow WordPress Category Feeds

This plugin adds link for the category feeds after post content.

Simple Share

Simple Follow Buttons does exactly what it says on the tin – adds follow buttons to all of your posts and pages, simply.
This plugin has a dedicated website! Check out <a href="https://simplefollowbuttons.com" rel="nofollow ugc">simplefollowbuttons.com</a>
You can even upload and use your own custom images if you wish!
Simple Follow Buttons utilises features that, as a WordPress user, you will be familiar with. A self-explanatory administration screen will have you showing your Follow Buttons on your posts and pages in no time!

Simple Follow Buttons

Just they way I like it!

A simple plugin that enables you to add follow buttons to all of your posts and/or pages.

Follow WordPress Category Feeds vs Simple Follow Buttons