TCBarrett

This plugin requires is just the front end javascript library, the following two things to be done in support: 
1. Add the class ‘simpleajaxform’ to your form. 
2. Make sure you have the correct wp_ajax handler hook defined.
It was primarily built as an example for a blog post.

Simple AJAX Form

A simple jQuery javascript library to ajax enable forms.

Sergey.S.Betke

Add Yandex.Metrika counter. And add counter integration for AJAX sites.
Theme requirements:
<ul>
<li>Theme must support footer (wp_footer). If not, you can change wp_register_script last parameter in php file: true => false.</li>
</ul>
For more information, please visit the <a href="http://sergey-s-betke.blogs.novgaro.ru/category/it/web/wordpress/ajax/yandex-metrika" rel="nofollow ugc">Sergey S. Betke blog</a>.
<h3>ToDo</h3>
The next version or later:
<ul>
<li>commom option for script location (header / footer)</li>
<li>links to yandex.metrika siter from wp-admin\options</li>
<li>support jQuery ajax events, not just my custom actions (hit.counter)</li>
</ul>

AJAX Yandex.Metrika

Add Yandex.Metrika counter. And add counter integration for AJAX sites.

Simple AJAX Form vs AJAX Yandex.Metrika