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 …

Sandesh

Lightweight Live Ajax Search plugin enables AJAX powered live search. Lightweight and provides a shortcode to display live search input box anywhere. You can place a shortcode wherever you want. Fully optimized and easy to use plugin.
<h3>How to use?</h3>
** Replace theme’s search form **
If you want to replace them’s search form, then it is a plug and play feature.
<ol>
<li>Go to Setings->Live Search</li>
<li>Enable Replace Theme’s Search Form option</li>
<li>Select the post types you want to allow for a search</li>
<li>Save it.</li>
</ol>
All instance of your theme’s search will replace with Live Ajax Search
** Use shortcode ** 
In some cases, if you do not want to replace theme’s search form, copy the shortcode and paste it anywhere you want. You have full flexibility on it.
<ol>
<li>Go to Setings->Live Search</li>
<li>Disable Replace Theme’s Search Form option</li>
<li>Select the post types you want to allow for a search</li>
<li>Save and Then Copy the shortcode and place it anywhere you want.</li>
</ol>

Lightweight Live Ajax Search

Live Ajax based search functionality. Lightweight and provides a shortcode to display live search input box anywhere.

Post Search Ajax vs Lightweight Live Ajax Search