mFax - mFax is a cloud-based fax solution for sending and receiving faxes from any device.
Dropbox - Online Sync and File Sharing
Hellofax - Easy. Reliable. Online faxing. Send & receive faxes from anywhere.
ownCloud - ownCloud is an open source project enabling businesses to host their own cloud storage while maintaining regulatory and compliance needs.
XM Fax - XM Fax is a file exchange solution that provides companies and users with secure transmission of their highly sensitive documents, including contracts, financial statements, transcripts, legal notices, etc.
Mega - Secure File Storage and collaboration