Yudhistira Mauris

This plugin helps you create a series of posts. It creates a new taxonomy named ‘series’ (can be modified via filter, see FAQ). There is no setting needed for this plugin. Once it is installed, assign posts you want to group as a series via post editor.
The plugin also creates a posts navigation on posts that belong to a certain series. See screenshots for the examples.

Easy Post Series

Works beautifully and doesn't have a sucking frontend design, as other similar plugins do!

Very good!

Pippin Williamson

Brian Krogsgard

Other Series plugins create a custom taxonomy where each series is a term. Most people probably don’t need a new taxonomy. Really Simple Series lets you turn any category into its own series with the click of a checkbox.
To turn on a series, you simple go to the edit category screen and check the box to enable Really Simple Series. Once you do, the plugin will automatically reverse the order of all posts in that category so that the oldest show up first. It will also automatically insert a list of all posts in the series at the bottom of each post in that category / series.
<h4>Options</h4>
You just have to click within the edit category screen to enable a series. There are no other options. There is a shortcode available called 
[rsseries cat=”148″], where “148” is a specific category ID, that can be used to display a series of your choice. Do not use the [rsseries] shortcode without a category parameter, or it may show all of your blog posts.

Really Simple Series

Really Simple Series allows you to turn normal blog categories into their own post series.

Easy Post Series vs Really Simple Series