Boone Gorges

<p>Here’s how I recommend using the class.</p>
<ol>
<li>Either activate this plugin, or include the class in your own plugin file.</li>
<li>When you start to render the page with the post list, instantiate the pagination class, using an argument array if you’d like: $pargs = array(   ‘get_per_page_key’ => ‘perpage’,   ‘get_paged_key’    => ‘current_page’,   ‘per_page’         => 15 ); $pagination = new BBG_CPT_Pag( $args );</li>
<li>When constructing your query arguments (for query_posts() or WP_Query), you can use the class to get your pagination arguments out of the $_GET parameters. For instance: $args = array(   …   ‘posts_per_page’ => $pagination->get_per_page,   ‘paged’ => $pagination->get_paged   … ); query_posts( $args );</li>
<li>After firing the query, use the <code>setup_query()</code> method to populate the rest of the class. If you used <code>query_posts()</code>, you don’t need an argument: $pagination->setup_query(); If you use <code>new WP_Query</code>, you’ll have to pass the query object: $my_query = new WP_Query; $pagination->setup_query( $my_query );</li>
<li>Then you can use all sorts of fun methods, like $pagination->paginate_links(); $pagination->currently_viewing_text();</li>
</ol>


Boone's Pagination

A handy, extensible class for paginating your custom post type lists.

Processby

<p>Loading paged content with Ajax. Works with standard WordPress pagination, WooCommerce pagination, plugins.<br />
<a href="https://processby.com/blog/" rel="nofollow ugc">Plugin demo</a></p>
<h4>Features</h4>
<ul>
<li>Ajax pagination;</li>
<li>“Load more” button;</li>
<li>“Load more” button and pagination;</li>
<li>Infinite Scroll;</li>
<li>Customisable styles.</li>
</ul>


WP Ajax Load More Pagination and Infinite Scroll

It is a great plugin. So much easy to use. It is also light. It saved me from hours of works. 
Thanks to the author. 
I hope author will keep it up to date and won't add unnecessary codes in the future.

Boone's Pagination vs WP Ajax Load More Pagination and Infinite Scroll