Déjà Dup is described as 'simple backup tool. It hides the complexity of doing backups the Right Way (encrypted, off-site, and regularly) and uses Duplicity as the backend' and is a popular app in the Backup & Sync category. There are more than 50 alternatives to Déjà Dup for a variety of platforms, including Windows, Mac, Linux, Android and iPhone. The best alternative is Duplicati, which is both free and Open Source. Other great apps like Déjà Dup are rsync (Free, Open Source), Macrium Reflect (Freemium), BackBlaze (Paid) and Restic (Free, Open Source).
Backer is a visual front end to the rsync command. It allows the user to select multiple folders and back them up to multiple locations. It stores your backup settings for you so that all your backups can be run easily using a single button click.
File History protects files from within the libraries, desktop, favorites, and contacts folders and creates copies of the files. in any event of a system refresh, reset or crash the files that were backed up via File History can easily be restored.