hashsalacop

Post Search ajax – is a live search plugin for WordPress. This already responsive live search engine, which will help your user experience by providing a user friendly ajax for your user. and also supported by the shortcode.
Plugin Features:
<ol>
<li>You Can Search using Ajax.</li>
<li>You can Change the layout of the Search form and Result.</li>
<li>Its easy to use.</li>
<li>Tested up to latest WordPress</li>
</ol>

Post Search Ajax

Post Search ajax – is a live search plugin for WordPress. This already responsive live search engine, which will help your user experience by providin …

wokamoto

You can choose (child) categories and see the posts belong to the chosen category with AJAX.
When the category you choose from the list box has child categories, the child categories will be shown in a new list box. 
Clicking the “Search” button, the list of posts belong to the bottom category which you choose will be displayed under the “Search” button.

Simple Category Search

You can choose (child) categories and see the posts belong to the chosen category with AJAX.

Post Search Ajax vs Simple Category Search