Google Drive, Google's online file storage system, is now live. With it you can upload and access all of your files including videos, photos, PDFs, Google Docs and more, just like with Dropbox or Sugarsync.
Google Docs is integrated with Google Drive so you can work on all your documents, presentations and spreadsheets, as well as share content and then add and reply to comments on any file (PDF, image, video, and so on) and receive notifications when some one else comments on a shared item. It has added some social networking features to cloud file storage. Drive will also recognize text in scanned documents. (similar to what Evernote does).