5GB Free account max file size: 100MB Paid account storage space: 25GB ($9.99/month); 50GB ($19.99/month); 1000GB ($15/user/month); unlimited (custom quote) Paid account max file size: 1GB / 2GB File storage expiration: None Other paid options: Full text search; item version history; Google Apps / Active Directory / Salesforce.com integration; ECM cloud support; custom branding Time to upload 100MB file: 12 min. 24 sec.
DropboxClick to view larger image.
Dropbox was among the first services to offer seamless upload and storage via its client software. All you need to do to sync files to Dropbox is put them in Dropbox's designated folder on a system with the client app, and the sync happens silently in the background. Sharing links and other admin functions can be done directly from the right-click menu in Explorer, but the only way to share with predefined lists of people is through your list of Facebook friends.
A special "Public" folder in your Dropbox account allows files to be linked to directly, without a click-though download or preview page. This way, you can upload a web page into the Public folder, link directly to it, and in effect host impromptu websites in Dropbox. Note that Web pages need to be encoded as straight ASCII to render correctly, as that's the default for documents served from Dropbox.
2GB (up to 18GB with 500MB per referral) Free account max file size: None Paid account storage space: 50GB ($9.99/month or $99/year); 100GB ($19.99/month or $199/year); 1TB+ ($795/year and up) Paid account max file size: None File storage expiration: None Other paid options: Unlimited file version retention; multi-account controls for teams; at-rest file encryption; dedicated phone support Time to upload 100MB file: 8 min. 3 sec.
Google DriveClick to view larger image.
As with Dropbox and SkyDrive, Google Drive's desktop client creates a folder into which you can place files that are automatically synced to the cloud and to other devices running the client.