This plugin shows the related posts under a post content according to the categories assigned to the current viewed post.
This is a very light plugin which loads very fast and compatible with all themes.
Features
Contributors: Amrinder Singh
Donate link: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=HH9UAGR9QBPWJ
Tags:related, posts, categories, perfect
Author: Amrinder Singh
Author URI: http://www.developingsense.com
Requires at least: 3.0.1
Tested up to: 4.4
Stable tag: 1.0.5
License: GPLv2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
This plugin shows all the related posts according to the categories of the displayed post.