Proxmox

RADOS Gateway is an object storage interface in Ceph. It provides interfaces compatible with OpenStack Swift and Amazon S3.

Proxmox Mail Gateway is a full featured, open-source mail proxy and protects your mail server from spam, viruses, trojans and phishing emails.

Backup your machines on Pfsense with pve-zsync tool.

Backup your machines on Pfsense with sanoid tool.

Backup your machines on Pfsense with znapzend tool.

The correct way to remove nod from proxmox cluster.