keesiemeijer

Add additional content on a post per post basis in the edit or publish post screen. The additional content editor can be used with all public post types.
Use this plugin for content that you, for whatever reason, don’t want to be included in the post content itself, like <a href="https://keesiemeijer.wordpress.com/2015/05/25/how-to-remove-specific-shortcodes-from-post-content/" rel="nofollow ugc">shortcodes</a>, or code snippets used by other plugins.
Another benefit of using this plugin is if you want content to be displayed before or after content that is automatically added by other plugins. The <a href="https://wordpress.org/plugins/additional-content/faq/" rel="ugc">priority parameter</a> will let you do just that.
For more information visit the <a href="https://github.com/keesiemeijer/additional-content" rel="nofollow ugc">GitHub repository</a>.

Additional Content

Display additional content before or after post content in single post pages.

nimeshrmr

About ISearch ?
ISearch is a wordpress post and page search plugin which allows users to filter content as they type the search text. Users can view the prefered results like a site tour.
View ISearch Demo
http://www.innovativephp.com/search
What can you do with ISearch
<ul>
<li>Allow users to find the content very quickly.</li>
<li>View the pages you want like a site tour.</li>
<li>Increase blog page views and user experience using tour effect.</li>
</ul>

ISearch

ISearch is a live blog search plugin which allows you to view filtered results like a tour.

Additional Content vs ISearch