“Youtube ToolTip” is a simple plugin, which changes all your links of “youtube” on a fast preview for the convenience of your readers.
Modifying all the links and using “jQuery” shows an attractive & modern blog.
Also use “qTip”, qTip is a tooltip plugin for the jQuery framework. It’s cross-browser, customizable and packed full of features! 
qTip is licensed under the open source MIT license, which allows you to use the script for whatever you want, whenever you want, however you want, as long as you include a copy of the license!
For more information about this plugin visit http://javiergalicia.wordpress.com/2009/07/03/youtube-tooltip-to-wordpress/

Youtube ToolTip

"Youtube ToolTip" Click on any of your links to get a quick preview of the youtube video.

Razorpay

This is the official “Quick Payments” plugin for Razorpay merchants. This allows 
you to do the following:
<ol>
<li>Add a few custom variables and some markup to a page.</li>
<li>Specify the amount, name, description and other custom details as page metadata.</li>
<li>Write [RZP] wherever you want on the post and the button to show up.</li>
<li>The plugin takes over and completes the payment.</li>
</ol>
This makes use of the Razorpay Orders API, and the flow is the follows:
<ol>
<li>The plugin parses the page before it is rendered</li>
<li>Inserts its javascript/css/html if it finds the relevant data and markup</li>
<li>A click on the button creates an “order” using Ajax/Razorpay API</li>
<li>The order ID is passed to checkout with auto-capture enabled</li>
<li>The payment is completed there itself and the customer is informed</li>
</ol>
<h3>Customization</h3>
For this plugin to work correctly, please mention the following items as page metadata (using Screen Options for >4.8) -> Custom Fields:
<ol>
<li>‘name’ of the product.</li>
<li>‘description’ of the product.</li>
<li>‘amount’ with a minimum of 1 rupee.</li>
</ol>

Razorpay Quick Payments

Allows you to easily sell things using Razorpay on your WordPress website.

Youtube ToolTip vs Razorpay Quick Payments