Syncthing is a continuous file synchronization program. It synchronizes files between two or more computers in real time, safely protected from prying eyes. Your data is your data alone and you deserve to choose where it is stored, whether it is shared with some third party, and how it’s transmitted over the internet.

Restic is a modern backup program that can back up your files from Linux, BSD, Mac and Windows to many different storage types, including self-hosted and online services

With DB you can very easily save, restore, and archive snapshots of your database from the command line. It supports connecting to different database servers (for example a local development server and a staging or production server) and allows you to load a database dump from one environment into another environment.

pgBackRest aims to be a simple, reliable backup and restore system that can seamlessly scale up to the largest databases and workloads.

Barman (Backup and Recovery Manager) is an open-source administration tool for disaster recovery of PostgreSQL servers written in Python. It allows your organization to perform remote backups of multiple servers in business critical environments and help DBAs during the recovery phase.