How to Synchronize Dropbox and Ubuntu One Online Backup Services: Dropbox and Ubuntu One are two of my favorite online backup services. They both provide safe, reliable, and easy-to-use cloud storage solutions. Their features may vary but they are all important to me, so I have installed and used Dropbox and Ubuntu One together on my Ubuntu desktop.I have Linux, Windows, and Mac computers at home and I find Dropbox essential for quickly synchronizing files across different operating systems.