Dropbox is a new way to sync your files across multiple computers.

A YCombinator startup, Dropbox has been around since 2005, but just recently came out of private beta for all to use. After a simple installation, Dropbox allows you to sync folders privately among your own computers (and the web) or share folders with friends. They also have tools for sharing and viewing photos. Dropbox is cross-platform (OSX, Win and *nix), and works through firewalls. I’ve been using dropbox for over a year both at home and work, with no problems.