Dropbox is good if you want to have local copies of files (perhaps because you go offline once in a while), or if you want these files to be synced in different

Dropbox is good if you want to have local copies of files (perhaps because you go offline once in a while), or if you want these files to be synced in different computers, or if those files need to be edited/viewed with software that does not live in the cloud or if you want to automatically keep the different versions of files (a new version stored every time you save the file) Google Docs is great if you need to synchronously edit documents with other people. You can upload and download files to Google Apps but as far as I know there is no cross-platform file syncing client that does what Dropbox does.