romainguillaume

This plugin targets menus anchors. Then when any gets clicked, this plugin makes the document scroll smoothly to the targeted element.
It is using a native Javascript function that works in many browsers. Note that some browsers will not display the scrolling smooth animation and only point the targeted element without animating the scrolling.

Libre scrolling

Triggers when a anchor of a menu is clicked ; scrolls smoothly to its targeted element.

Mitch

A minimal but flexible plugin build to improve user experience.
All features below are optional.
<ul>
<li>Add smoothscrolling to your website</li>
<li>Add smoothscrolling to your admin panel</li>
<li>Change smoothscrolling settings such as frame rate, animation time, etc.</li>
<li>Keyboard support</li>
<li>Touchpad support</li>
<li>Testing: this will enable smoothscrolling for admins only, allowing you to play around with the custom options</li>
</ul>
This plugin also automatically checks if the visitors’ browser has already added any smoothscrolling- when that is the case, this plugin will automatically disable its functionality.

Smoothscroll

Adds smoothscrolling to your website for better user experience.

Libre scrolling vs Smoothscroll