I am a huge fan of Google Docs. Lately I have noticed a message when I log in saying that Google Docs will be updated to Google Drive. There was also a link that I could make the shift now if I wanted to. Well I was feeling brave today and I did!!!
Google Drive downloads and installs an application onto your computer much like Dropbox. Google Drive will appear in your programs listing and as an icon in your systems tray. Drop files into Google Drive and they will sync across all machines connected to your drive as well as in your online account. Files created in other software can also be saved to Google Drive not just Google Documents. Files can still be shared and edited like the online Google Docs.
An app for iPad and iPhone are to be available soon. I may be transferring my files from Dropbox to Google Drive when that happens.