Wikipedia: Then (2001)
Wikipedia: Now
Weather.com: Then (1996)
Weather.com: Now
Reddit: Then (2005)
Reddit: Now
Pinterest: Then (2010)
Pinterest: Now
Buzzfeed: Then (2006)
Buzzfeed: Now
Google: Then (1998)
Google: Now
Tumblr: Then (2007):
Tumblr: Now
AOL: Then (version 2.0 in 1994 and 1.0 disk)
AOL: Now
Whitehouse.gov: Then (1996)
Whitehouse.gov: Now
eBay: Then (1995)
eBay: Now
Yelp: Then (2004)
Yelp: Now
Foursquare: Then (2009)
Foursquare: Now
LinkedIn: Then (2003)
LinkedIn: Now
The Huffington Post: Then (on the day of its launch, May 2005)
The Huffington Post: Now
MySpace: Then (2003)
MySpace: Now
YouTube: Then (2005)
YouTube: Now
Twitter: Then (2006)
Twitter: Now
Yahoo: Then (1994)
Yahoo: Now
The New York Times: Then (1996, note the funny text at the bottom)
The New York Times: Now
Flickr: Then (2004)
Flickr: Now
Facebook: Then (2004)
Facebook: Now
Silicon Alley Insider (pre-Business Insider): Then (2008)
Business Insider: Now
Amazon: Then (1995)
Amazon: Now
Uber: Then (2010)
Uber: Now
Instagram: Then (2011)
Instagram: Now