WeTransfer - WeTransfer is a free service to send big or small files from A to B.
Mega - Secure File Storage and collaboration
Dropbox - Online Sync and File Sharing
Userscloud - Userscloud is a free cloud service that offers unlimited online storage, remote backup capacity, fast uploading, and downloading tools.
Subyshare - Subyshare.
Hightail - The professional way to send & share files and folders with anyone