arsho

WP-Smooth-Scroll is a plugin that helps users to scroll smoothly to top of the page.
Main features of WP-Smooth-Scroll are:
<ul>
<li>WP-Smooth-Scroll is simple to set up and use.</li>
<li>It has options to select the position of WP-Smooth-Scroll button.</li>
<li>It wont create problem in smaller screen like mobile or tablet.</li>
<li>It is smooth and dynamic.</li>
<li>WP-Smooth-Scroll has an eye catching effect with nice hover effect.</li>
</ul>
Plugin Demo: <a href="http://shovon.info/wp/wp-smooth-scroll" rel="nofollow ugc">Plugin Support</a>

WP-Smooth-Scroll

WP-Smooth-Scroll is a plugin that helps users to scroll smoothly to top of the page.

HRanjan

This plugin adds a Scroll to top button in the footer of the WordPress website. It smoothly 
scrolls the website page on a single click. The icon will only appear when the height of the 
web page exceeds from a standard measure otherwise scroll icon will be invisible. The 
plugin gives you a varieties of icons to suit your website color. You can either select 
an icon or use it without icon with any background color. This plugin also comes with lot 
of options to customize the display of scroll button. Like the width and height of the icon 
can be customized, background color of the icon can be set if no icon is chooses. 
This is very simple plugin and compatible with wordpress version 3.0 to 3.5
<h4>Features</h4>
<ul>
<li>Scroll to top of web pages</li>
<li>Smooth scroll with invisible icon</li>
</ul>
<h4>Docs & Support</h4>
You can find docs, FAQ and more detailed information about Ax ScrollTo Top on <a href="http://www.annupex.com" rel="nofollow ugc">annupex.com</a>. 
If you were unable to find the answer to your question on the FAQ or in any of the documentation, 
you should check the support forum on WordPress.org. If you can’t locate any topics that pertain 
to your particular issue, post a new topic for it.
To know more about this plugin visit <a href="http://www.annupex.com/wordpress-plugins/ax-scrollto-top/" rel="nofollow ugc">Ax ScrollTo Top</a>
<h4>Recommended Plugins</h4>
The following are other recommended plugins by the author of Ax ScrollTo Top.
<ul>
<li><a href="https://wordpress.org/extend/plugins/remove-admin-footer-and-version" rel="ugc">Remove Admin Footer and Version</a> – With this 
plugin, you can remove the WordPress default footer text in admin control panel. It also removes the wordpress version 
number in the same control panel.</li>
</ul>
Disclaimer: 
Some of the scroll icon images are taken from http://office.microsoft.com/en-us/images/

Ax ScrollTo Top

Great Plugin

Add a Scroll to top button in the website footer.

WP-Smooth-Scroll vs Ax ScrollTo Top