An online file sharing service provides a way to store and access information, such as documents, data, photos and video, in the cloud rather than storing the information locally on a device hard drive or removable media.

Secure file sharing is the process of sharing one or more files securely or privately. It enables sharing files between different users/organizations confidentially and/or within a protected mode, secure from intruders or unauthorized users. Secure file sharing is also known as protected file sharing.

Self-certifying File System (SFS), a global network file system designed to securely allow access to file systems across separate administrative domains.

1) ShareFile 2) Dropbox Business 3) Google Drive 4) Dropbox.