super-simple-related-posts

This is absolutely one of the best related posts plugins. It supports custom post types and a host of other options. You might need to style the output a bit, but that is something I want to do myself anyway. Clean and simple. Love it!

The title of the plugin is a bit deceptive: this is definitely the type of plugin that requires patience to figure out. To some extent this comes with the territory: it has so many features that it would be strange if it was really as simple as the title suggests. However, it would be nice if the widget worked at the default settings (and no, it does not).

I'm completely in love with this plugin. Try it!