Dropbox - Online Sync and File Sharing
WeTransfer - WeTransfer is a free service to send big or small files from A to B.
Mega - Secure File Storage and collaboration
Microsoft OneDrive - Secure access, sharing & file storage
4Shared - 4shared is a perfect place to store your pictures, documents, videos and files, so you can share them with friends, family, and the world. Claim your free 15GB now!
Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.