If you are a user of Picasa, Gmail, Google Docs and other Google Web applications, then Google.mE should be a useful tool. Google.mE is a Java based project designed to enable users to sync with all their online Google web applications like Picasa, Google docs, Google Reader, and many more. You can log into these applications using your Google ID. The application currently supports Picasa, Google Docs, Google Reader, Google Contacts and YouTube.
You can add or delete files in your Google Docs and also export them.
You can add new feeds to your account from this interface and it will do the synchronization. There is also Google Contacts and YouTube by which you can manage your contacts and also add content to YouTube.
You need to have Java installed on your PC to run this application. This is just a preview build of this tool and you might see some more Google web apps being integrated in future versions.