The Internet Archive discovers and captures web pages through many different web crawls.
At any given time several distinct crawls are running, some for months, and some every day or longer.
View the web archive through the Wayback Machine.
Welcome to the Mozilla Demo Studio, where developers like you can develop, share, demonstrate, and learn all about Web technologies. See what's possible by exploring Demo Studio:
View demos that showcase what HTML, CSS, and JavaScript can do.
Inspect the source code for those demos so you can see how they work.
Read documentation to learn about the open standards and technologies that power the Web.
Paperfold CSS
Multitouch Boids
Wish Explorer
Canvas Animation 
Ultra Lato64 | Font on Acid 
DaisywheelJS
HTML blog template.
Responsively Lazy
Escher Puzzle
Line Drawing 
Fun with SVG lines
Ping Pong Game