ishihara takashi

Release.Is a powerful search plugin for WordPress users. Implements typeahead.js using a ingrimental search.
Start by pressing SHIFT key two times.
<h4>Featured</h4>
<ul>
<li>Admin Menu Search</li>
<li>Post Search</li>
<li>Page Search</li>
<li>Media Searchd</li>
<li>Cusotom Post Type Search</li>
<li>User Search</li>
<li>Select a color scheme</li>
<li>Select a trigger key</li>
<li>Starting from the admin bar</li>
</ul>
Github repo
https://github.com/1shiharaT/powearch/

Powearch

Release.Is a powerful search plugin for WordPress users.

Frank Bueltge

Inpsyde GmbH

Simon Kraft

WP Media

ChriCo

Rene Reimann

s-hinse

With Search & Replace you can search for everything and replace this with everything but before you do this you can easily create a simple database backup and restore it.
For avoiding problem please keep in mind that this plugin search and replace strictly what is specified in “Replace With”. 
Common error example: 
Search For: http://web.com/wordpress/ 
Replace With: http://neuweb.com/wordpress 
The url become something like: http://neuweb.com/wordpresscontent/…
Correct “Replace with”: 
Search For: http://web.com/wordpress/ 
Replace With: http://neuweb.com/wordpress/ 
The url become something like: http://neuweb.com/wordpress/content/…
We have implemented special features!
The first one is “Replace a Domain / URL” that is useful for a quick and simple transfer or a migration of a WordPress site. 
The second feature is full support for serialized data. There are a lot more features – check them out! 🙂
Our goal with this plugin is to give you a good solution for manipulating your data for both Developers and Users of WordPress.
<blockquote>
Note: This plugin requires PHP 5.6 or higher to be activated.
</blockquote>
<a href="https://github.com/wp-media/search-and-replace" rel="nofollow ugc">Checkout our GitHub Repository</a>
<h4>Features</h4>
<ul>
<li>Search & replace data in your WordPress database</li>
<li>Change domain/URL of WordPress installation</li>
<li>Handle serialized data</li>
<li>Choose dry run or download SQL file</li>
<li>Change table prefix</li>
<li>Backup & restore your database</li>
<li>WordPress Multisite support</li>
<li>Localized and ready for your own language</li>
</ul>
<h4>Crafted by WP Media</h4>
Made by <a href="https://wp-media.me" rel="nofollow ugc">WP Media</a>.
<h4>Donation?</h4>
You want to donate – we prefer a <a href="https://wordpress.org/support/view/plugin-reviews/search-and-replace?rate=5#postform" rel="ugc">positive review</a>, not more.

Search & Replace

Search & Replace data in your database with WordPress admin, replace domains/URLs of your WordPress installation.

Powearch vs Search & Replace