Bootstrap is the most popular HTML, CSS, and JS framework in the world for building responsive, mobile-first projects on the web.
https://jquery.com Font Awesome
Font Awesome gives you scalable vector icons that can instantly be customized — size, color, drop shadow, and anything that can be done with the power of CSS.
Just-add-water CSS animations.
Reveal Animations When You Scroll. Very Animate.css Friend :-) Easily customize animation settings: style, delay, length, offset, iterations...
Holder renders image placeholders entirely in browser.
A simple, accessible and customizable HTML5, YouTube and Vimeo media player.
https://plyr.io Bower updatable
Everything is updatable with a simple
$ bower update in the themes root folder.