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.
Find out niche websites that uses specific keywords in some parts of the page.
Website Footprints and Keyword Finder tool is great for finding website foot prints with specific keywords, strings and urls. It will help you to find out websites that uses your specified keywords, CMS, script or any other website element that you're looking.
Generate links that relate to the keyword/topic of your choosing.