Syncwerk!

You should have full control over your data. We help you achieve that: a safe home for all your data. Secure, under your control and developed in an open, transparent and trustworthy way. We are Nextcloud.

SpiderOak provides an easy, secure and consolidated online backup, storage, access, sharing & sync tool for Windows, Mac OS X, and Linux (Ubuntu, Debian & Fedora). SpiderOak offers a different approach to online backup, synchronization, and sharing. This difference is not just measured in our zero-knowledge privacy policy - the first one ever employed in this setting - but also in our flexible design in handling data from all platforms (Mac, Windows, Linux) and locations (external drives, network volumes, USB keys) in one centralized account. »

Seafile is a file hosting software system. Files are stored on a central server and can by synchronized with personal computers and mobile devices via the Seafile client. Files can also be accessed via the server's web interface. Seafile's functionality is similar to other popular services such as Dropbox and Google Drive, with the primary difference being that Seafile is free and open-source, enabling users to host their own Seafile servers without artificially imposed limits on storage space or client connections. »

SugarSync lets you synchronize, backup and remotely access files and folders across your PC or Mac. You can also remotely view files from Windows Mobile, Blackberry, iPhone, Symbian and Android.

SparkleShare is a Free Open Source syncing tool. Its light, secure and easy to use. SparkleShare allows you to setup your own servers so you always keep control on your data.

Tresorit is a security solution for distributed storage systems, and with it a group of users can share secure content without trusting any administrator or third party provider. This system guarantees the users that they can: share content with a group; handle read and write permissions; manage dynamically changing groups; and no one outside the group can read or write files. These properties can be reached with implicitly granted security, based on a strong cryptographic technology.

Sync lets you store your files safely, securely and easily in the cloud. Access and share your files from your computers, iPhone, iPad and the web - all without compromising your privacy.

Get 5 GB of full featured Online Backup for free. Features include Automatic Backup, True Archiving, Versioning, Continuous Backup, Mapped Drive Backup and Web-based Backup Management.IDriveSync syncs files online across multiple PCs and Macs. On installing and logging into the application, it opens up a 'Sync' area where you can add the files you wish to sync.With iDrive Sync you can Sync up to 5 computers: Once you have new data into your Sync area, your Sync data starts getting transferred online, or 'Syncs-Up'. This essentially serves as an online backup of your data. Now, if you simply install and login on multiple PCs / Macs using same authentication, the synced data is 'Synced-Down' onto those multiple computers.Anytime you make a change to synced data anywhere on those multiple computers, all the computers will shortly reflect the modified data. »