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.
They enable you to create your own personal dashboard. In fact, this is how I track my various projects. To enable this, new Google Code project hosting gadgets are now available for each project on Google Code. They can be discovered under the feeds link in the project homepage.