Kite

Usage:
<ul>
<li>
<code>get_fixed_previous_post( $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' )</code>
<ul>
<li>instead of <code>get_previous_post()</code></li>
</ul>
</li>
<li>
<code>get_fixed_next_post( $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' )</code>
<ul>
<li>instead of <code>get_next_post()</code></li>
</ul>
</li>
<li>
<code>get_fixed_adjacent_post( $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' )</code>
<ul>
<li>instead of <code>get_adjacent_post()</code></li>
</ul>
</li>
<li>
<code>get_fixed_adjacent_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' )</code>
<ul>
<li>instead of <code>get_adjacent_post_rel_link()</code></li>
</ul>
</li>
<li>
<code>fixed_adjacent_posts_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' )</code>
<ul>
<li>instead of <code>adjacent_posts_rel_link()</code></li>
</ul>
</li>
<li>
<code>fixed_adjacent_posts_rel_link_wp_head()</code>
<ul>
<li>instead of <code>adjacent_posts_rel_link_wp_head()</code></li>
</ul>
</li>
<li>
<code>fixed_next_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' )</code>
<ul>
<li>instead of <code>next_post_rel_link()</code></li>
</ul>
</li>
<li>
<code>fixed_prev_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' )</code>
<ul>
<li>instead of <code>prev_post_rel_link()</code></li>
</ul>
</li>
<li>
<code>get_fixed_previous_post_link( $format = '&laquo; %link', $link = '%title', $in_same_cat = false, $excluded_terms = '', $taxonomy = 'category' )</code>
<ul>
<li>instead of <code>get_previous_post_link()</code></li>
</ul>
</li>
<li>
<code>fixed_previous_post_link( $format = '&laquo; %link', $link = '%title', $in_same_cat = false, $excluded_terms = '', $taxonomy = 'category' )</code>
<ul>
<li>instead of <code>previous_post_link()</code></li>
</ul>
</li>
<li>
<code>get_fixed_next_post_link( $format = '%link &raquo;', $link = '%title', $in_same_cat = false, $excluded_terms = '', $taxonomy = 'category' )</code>
<ul>
<li>instead of <code>get_next_post_link()</code></li>
</ul>
</li>
<li>
<code>fixed_next_post_link( $format = '%link &raquo;', $link = '%title', $in_same_cat = false, $excluded_terms = '', $taxonomy = 'category' )</code>
<ul>
<li>instead of <code>next_post_link()</code></li>
</ul>
</li>
<li>
<code>get_fixed_adjacent_post_link( $format, $link, $in_same_cat = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' )</code>
<ul>
<li>instead of <code>get_adjacent_post_link()</code></li>
</ul>
</li>
<li>
<code>fixed_adjacent_post_link( $format, $link, $in_same_cat = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' )</code>
<ul>
<li>instead of <code>adjacent_post_link()</code></li>
</ul>
</li>
</ul>

Fixed Adjacent Post

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

ambrosite

IMPORTANT: Make sure you are using the right plugin.
<ul>
<li>Next/Previous Page Link Plus is intended for use in page templates.</li>
<li>Next/Previous Post Link Plus is intended for use in single post 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 posts (including custom post types), please check out: 
https://wordpress.org/extend/plugins/ambrosite-nextprevious-post-link-plus/
This plugin creates two new template tags — next_page_link_plus and previous_page_link_plus — which may be used to generate next/previous navigation links for pages. The new tags include the following options:
<ul>
<li>Sort the next/previous page links on any column, including alphabetically, by date, and by menu_order.</li>
<li>Sort the next/previous links on custom fields (both string and integer sorts are supported).</li>
<li>Loop around to the first page if there is no next page (and vice versa).</li>
<li>Retrieve the first/last page, rather than the previous/next page (for First|Previous|Next|Last navigation links).</li>
<li>Display the featured image 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, 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 parent page, author, or custom field value.</li>
<li>Exclude or include individual page IDs.</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>
</ul>
Extensive documentation on configuring the plugin may be found here: 
http://www.ambrosite.com/plugins/next-previous-page-link-plus-for-wordpress

Ambrosite Next/Previous Page Link Plus

The best! I wish it was updated, even though it works fine with debugging on.



I tried several of these type of plugins or other ideas and this one is the best

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

Fixed Adjacent Post vs Ambrosite Next/Previous Page Link Plus