Get Backup is described as 'native Mac OS X backup software utility. This program is a simple and efficient tool for creating personal backups, suitable for both beginners and pros' and is an app in the Backup & Sync category. There are more than 25 alternatives to Get Backup for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and Android. The best alternative is Duplicati, which is both free and Open Source. Other great apps like Get Backup are rsync (Free, Open Source), Spideroak One Backup (Paid), Déjà Dup (Free, Open Source) and Time Machine (Free).
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.
Time Machine is the breakthrough automatic backup that’s built right into Mac OS X. It keeps an up-to-date copy of everything on your Mac — digital photos, music, movies, TV shows, and documents. Now, if you ever have the need, you can easily go back in time to recover anything.
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.