Wordpress Plugins
Scrolly: Scrolling Interactions for WordPress
Here is a plugin that lets you make scrolling on your website into a more dynamic experience. Scrolly has a visual builder for customizing scrolling actions on your website. It lets you customize alignment, size, and other parameters for your content. Scrolly supports HMTL5 and CSS3.
Scrolly is responsive and ready for all your favorite devices. Its live preview editor shows you exactly what you are building. You will also be able to easily import/export content. Should work with most themes and plugins without a major issue.