Free File Sync is an Open Source file synchronization software that’s above everything else super-easy to use. The main interface is separated into a left and right column. Directories can be added to each column. The two main actions offered by Free File Sync are to compare or synchronize the directories and the files residing in them. A click on the Compare button at the top will generate a directory and file listing for every directory that has been added to the application.

For complete how to and latest download version go to FreeFileSync site here.

Way Back Machine

The Wayback Machine is a digital archive of the World Wide Web, founded by the Internet Archive, a nonprofit library based in San Francisco. It allows the user to go “back in time” and see what websites looked like in the past. Its founders, Brewster Kahle and Bruce Gilliat, developed the Wayback Machine with the intention of providing “universal access to all knowledge” by preserving archived copies of defunct webpages.