Restic - Easy: Doing backups should be a frictionless process, otherwise you are tempted to skip it.

MirrorBackup.net - Mirror Backup protects from data loss by continuously monitoring files and folders, and backing them up to the cloud or a local drive when they change.

Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.

UKs Kalender - This program helps you organizing your dates and tasks and reminds you of upcoming events.

rsync - rsync is a file transfer program for Unix systems. rsync uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync.

AnyBackup - AnyBackup is designed to keep two pools of volumes in sync with one another.