Aciano Technologies

Automatically inserts a Table of Contents based on heading tags into your post content. You can enable it on a per-post basis using a checkbox in the editor.

AT – Table Of Content

A simple, customizable Table of Contents plugin for WordPress posts.

Rommel Plofino

RP Post Nav plug-in gives you facility to:
<ol>
<li>Navigate within Post Category/Taxonomy or Date Wise Navigation.</li>
<li>Option to set Post Navigation Bar at Bottom, Top or both Top & Bottom.</li>
<li>Apply CSS Style to Previous and Next Post Display.</li>
<li>Customizing Label Text instead of default Next/Previous Labels.</li>
<li>Customizing Image for Next/Previous Post Background.</li>
<li>Select Custom Post Types and Taxonomies for related post.</li>
<li>Manually Place RP Post Nav Shortcode.</li>
</ol>
For Help visit: https://wordpress.org/support/plugin/rp-post-nav

RP Post Nav

Show Next and Previous Post Links, Thumbnails or Excerpt at Posts, Pages, Media or Custom Post Types.

AT – Table Of Content vs RP Post Nav