On Friday, the Internet Archive announced a major milestone for the Wayback Machine, a project which allows you to search almost any website and see what it looked like on any day since its inception. The Archive has added 400 billion additional indexed web pages, encompassing pages dating as far back as 1996.
For reference, estimates put the current number of web pages at 2.15 billion, which means the Internet Archives has approximately 200 historical indexes of each page. With the new collection, you can see what the New York Times was talking about on any given day, or just take a step back in time to see what AOL.com looked like 15 years ago.
To get a sense of what the Internet used to look like, here's a selection of some of the earliest available indexes of a variety of websites.
Also interesting to see: NewYorkTimes.com on 9/11/01
Though it doesn't look much different today: