CloudSafe GmbH focuses on the development of software and the operation of services in the area of cryptography.

Reference: https://secure.cloudsafe.com/

SugarSync is a provider of Personal Cloud services that enable users to access ALL of their data, anytime, anywhere, and from any device.

Reference: https://www.sugarsync.com/

Dropbox is a Web-based file hosting service operated by Dropbox, Inc. that uses cloud computing to enable users to store and share files and folders with others across the Internet using file synchronization.

Platform: Linux / Windows / Mac

References: https://www.dropbox.com/ https://zh.wikipedia.org/wiki/Dropbox

Ceph is a free software distributed file system initially created by Sage Weil. Ceph's main goals are to be POSIX-compatible, and completely distributed without a single point of failure.

Platform: Linux;License: LGPL

References: https://ceph.newdream.net/about/ https://en.wikipedia.org/wiki/Ceph

Amazon CloudFront is a content delivery web service. It integrates with other Amazon Web Services to give developers and businesses an easy way to distribute content to end users with low latency, high data transfer speeds, and no commitments.

References: https://aws.amazon.com/cloudfront/ https://en.wikipedia.org/wiki/Amazon_CloudFront

Live Mesh is a data synchronization system from Microsoft that allows files, folders and other data to be shared and synchronized across multiple personal devices and up to 5GB on the web.

Platform: Windows / Mac

References: https://www.mesh.com/welcome/default.aspx https://en.wikipedia.org/wiki/Live_Mesh

BitTorrent is a peer-to-peer file sharing protocol used for distributing large amounts of data. BitTorrent is one of the most common protocols for transferring large files, and it has been estimated that it accounts for approximately 27-55% of all Internet traffic

Platform: Linux / Windows

References: https://www.bittorrent.com/ https://en.wikipedia.org/wiki/BitTorrent_(protocol)