It includes so much stuff it’s hard to make a list but I will try:

input field and text area
check-box
radio buttons
drop-down list
list box
calendar
simple button
CTA buttons
social login button
interface buttons
pixel icons with 36 pixel icons / glyph
breadcrumb
step progress
progress bar
tooltip
rating stars
pagination
switch
slider
video player
audio player
55 infinitely scalable vector icons for web apps
tabs
notification messages
special offer badges