Dropbox - Online Sync and File Sharing
Wikisend - Wikisend is a free online file and documents sharing administration that gives you a chance to share documents on the web.
Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.
Ge.tt - The best way to publish and share your files.
Filestash - Filestash is a modern client for FTP, SFTP, S3, WebDAV, Minio,...
Files2U - Files2U is free to use web service that permits you to share documents on the web.