The Wayback Machine
See What Almost Any Website (Including
Your Competitors') Looked Like In The Past

The Wayback Machine - Did you know that you can look back months and years to see previous versions of almost any website? Try it with your own website using the Wayback Machine. By combining the data from Alexa.com with this awesome tool, you can look at different versions of your competitors' websites and pick apart their strategies. You can get a ton of competitive intelligence with this tool.