Upgrades the next/previous post link functions to reorder or loop adjacent post navigation links, display post thumbnails, and customize link format.

ambrosite

Ambrosite Next/Previous Page Link Plus

Creates two new template tags for generating next/previous page navigation links.

Kite

Fixed Adjacent Post

Fix the not-excluding terms bug of get_adjacent_post().

IMPORTANT: Make sure you are using the right plugin.
<ul>
<li>Next/Previous Post Link Plus is intended for use in single post templates.</li>
<li>Next/Previous Page Link Plus is intended for use in page templates.</li>
</ul>
The two plugins have similar sounding, but different, function names. If you mistakenly install the wrong plugin, you will get a “call to undefined function” error. If you want to create next/previous links for your pages, please check out: 
https://wordpress.org/extend/plugins/ambrosite-nextprevious-page-link-plus/
IMPORTANT: This plugin is not compatible with PHP 4. If you try to install it on a host running PHP 4, you will get a parse error. WordPress has officially ended support for PHP 4 as of version 3.2, so you should upgrade to PHP 5.2 now. For those who cannot upgrade, you can download the alternate PHP 4 compatible version of the plugin. The only difference with the PHP 4 version is that the %category variable will not work with custom taxonomies. 
http://www.ambrosite.com/download/ambrosite-nextprevious-post-link-plus.php4.zip
This plugin creates two new template tags — next_post_link_plus and previous_post_link_plus — which are upgraded versions of the core WordPress next_post_link and previous_post_link template tags. The new tags include all of the functionality of the core tags, plus the following additional options:
<ul>
<li>Sort the next/previous post links on columns other than post_date (e.g. alphabetically).</li>
<li>Sort next/previous links on custom fields (both string and integer sorts are supported).</li>
<li>Full WordPress 3.3 compatibility, including support for custom post types, custom taxonomies, and post formats.</li>
<li>Loop around to the first post if there is no next post (and vice versa).</li>
<li>Retrieve the first/last post, rather than the previous/next post (for First|Previous|Next|Last navigation links).</li>
<li>Display post thumbnails alongside the links (WordPress 2.9 or higher).</li>
<li>Truncate the link titles to any length, and display custom text in the tooltip.</li>
<li>Display the title, date, author, category, and meta value of the next/previous links.</li>
<li>Specify a custom date format for the %date variable.</li>
<li>Restrict next/previous links to same category, taxonomy, format, author, custom field value, custom post ID list, or custom category list.</li>
<li>Exclude categories, custom taxonomies, post formats, or individual post IDs.</li>
<li>Three category exclusion methods for greater control over the navigation stream.</li>
<li>Return multiple next/previous links (e.g. the next N links, in an HTML list).</li>
<li>Return the ID, title, date, href attribute, or post object of the next/previous links, instead of echoing them to the screen.</li>
<li>Return false if no next/previous link is found, so themes may conditionally display alternate text.</li>
<li>Works with Post Types Order and other popular post reordering plugins.</li>
</ul>
Extensive documentation on configuring the plugin may be found here: 
http://www.ambrosite.com/plugins/next-previous-post-link-plus-for-wordpress

Ambrosite Next/Previous Post Link Plus

Has many options to customize as well.  Hasn't been update for a while, but still works perfectly with WP 4.5.3.



Excellent - does what it says.

Provides next/previous post link template tags that work the way you'd expect the built-in WP functions to work!



A beautiful thing

This plugin has saved me countless hours and does exactly what it needs to do with easy setup and lots of options. Love it.

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