USBSink is a GNOME program for automatic file synchronization with removable drives, such as flash drives or external hard disks. In USBSink, you define a task associated to a particular drive, and then have a complete automation of data transfers. With file monitoring and hardware detection features, the program is able to respond and act according to relevant events on the desktop.
Paperbox is a document browser. It lets you nicely view your ebooks, office and text documents and organize them by tags. Relying on Tracker, it is able to instantly discover all documents on your desktop and present them in a convenient way. Tags and other metadata are shared across all Tracker-based applications.
Every five minutes, Tumblefile copies all files on your Desktop to a folder such as ~/Documents/2009-07-July/25-Saturday, prepending a timestamp (like 20090727.1645) to the filename. Meanwhile, its little window sits in the system tray. It is a way to automatically keep your Desktop cleared and files organized.