If you are a Google docs user, then it is good to have your documents updated and synced to Google docs from your desktop. Up the Sync is a nice freeware app which allows user to sync your desktop documents with Google docs. What makes Up the Sync still better is the fact that it does the synchronization automatically from the system tray. You just need to specify the folder where you files are stored. Further, it can sync multiple folders at the same time.
First time you use the app, you need to specify your Google account details. Add the folders where your documents are stored and the application lists out all the text files for sync.
The application needs Java runtime for execution as it is written in Java. It auto-syncs every 5 minutes by default, and can run quietly in the system tray. If the user updates a document on their computer the Google docs version is also updated.