Dropbox - Online Sync and File Sharing
mFax - mFax is a cloud-based fax solution for sending and receiving faxes from any device.
Mega - Secure File Storage and collaboration
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.
eFax - Over 11 million people use eFax every day for their fax communications.