Users, using Firefox on multiple Computers would love this new Firefox extension from Google —for e.g. if you are working on Firefox with four tabs open, on your home computer and you want to restore the same workspace on your Work computer —or you have to transfer your Firefox browsers, saved passwords and cookies from your desktop to laptop — Google Browser Sync lets you do this – it synchronize your bookmarks, history, persistent cookies, tabs, windows, and saved passwords across your computers. It’s useful if you a have a desktop and a notebook and you want a coherent browsing experience.
During setup, you need to provide a PIN to encrypt information that’s synchronized between your computers. That means the information will be transmitted to and stored on Google’s servers in a format that can’t be decrypted without the PIN.
Another extension that has a similar purpose is Firefox Extension Backup (FEBE), but it can also backup extensions and themes.
Synchronize, Firefox, Settings, Google Browser Sync