Duplicati is a backup client that securely stores encrypted, incremental, compressed backups on local storage, cloud storage services and remote file servers. The Duplicati project was inspired by Duplicity and had similar functionality until 2008.
SpiderOak provides an easy, secure and consolidated online backup, storage, access, sharing & sync tool for Windows, macOS, and Linux (Ubuntu, Debian & Fedora). SpiderOak offers a different approach to online backup, synchronization, and sharing.
Déjà Dup is a simple backup tool. It hides the complexity of doing backups the Right Way (encrypted, off-site, and regularly) and uses Duplicity as the backend.
rdiff-backup backs up one directory to another, possibly over a network. The target directory ends up a copy of the source directory, but extra reverse diffs are stored in a special subdirectory of that target directory, so you can still recover files lost some time ago.
MSP360 Backup provides SMBs with an affordable and secure backup solution that works on all major platforms, including Windows, Linux, Mac, Hyper-V, and VMware.
A graphical interface for the Rsync engine that will synchronise files between two computers either locally or over the internet. The beauty of Rsync is that it only transfers the exact part of a file that has changed (differential synchronisation), saving bandwidth and time.
Swiss Backup is like an online safe in which your entire machine, your files, folders and even your OS configuration is stored, enabling you to recover an identical copy of your machine.