DROPitTOme - Allows you to let others securely upload files to your Dropbox account.
File Request Pro - Collect and receive file from anyone in a quick, simple and secure way. File request links and secure, branded upload pages that go straight to Google Drive, OneDrive, Dropbox or your Email.
dbinbox - dbinbox makes it easy to send files
DriveUploader.com - Upload component for receiving large files on your websites or in products.
Docpool - Work more efficiently in your clients project
Send To My Cloud - Let your users upload files to your cloud storage