iniyan

Logesh Kumar Rajkumar

This plugin adds a previous and next post links on a single post in a conventional way. This plugin creates a new Genesis settings page (Genesis Post Navigation) that allows you to Customize the post navigation colors and to navigate posts within category.
Requires the Genesis framework.
Animations: On mouseover the previous and next links can travel from north pole to south pole 🙂 
But, I put just 20px.
Check <a href="http://logeshkumar.com/wordpress-performance/" rel="nofollow ugc">plugin demo here</a>
We really thank Andrew Norcross. We get color selection options from Andrew Norcross’s plugin Genesis design pallete.

Genesis Post Navigation

This plugin adds post navigation and an additional option to navigate posts within category.

keith_wp

Instantly join separate posts together by making the Previous/Next Post links on a Single Post look for other posts that share the same taxonomies.
This lightweight plugin simply adds a filter to your selected taxonomies (both default and custom) so that any theme can have its post navigation links stay in the same category as the currently viewed post.

Keep Pagination in Same Taxonomy

Makes any previous/next post links use the same taxonomy as the current post.

Genesis Post Navigation vs Keep Pagination in Same Taxonomy