Tools for Finding Old Web Pages

Determining if and how a Web site has changed can be an important factor in litigation. Many of you probably know about a wonderful tool called the Wayback Machine which archives sites and displays them as they were at various points in time.
But, but did you know that there were other tools that do this as well? I didn’t.
Search Engine Showdown has compiled a handy chart for Finding Old Web Pages. In addition to listing each tool, the chart notes how far back the archive goes, and how to search it.