

What platforms are you working with? Borg might serve you better than Duplicati, but last I checked there’s no official Windows version.
There’s also Kopia. I haven’t used it much personally but I’ve heard good things. It supports a range of upload protocols: https://kopia.io/docs/features/#save-snapshots-to-cloud-network-or-local-storage
















I meant on your own system, running the backup software, since it sounds like Duplicati isn’t the best choice. Borg is a great backup program but it’s made for Linux. Kopia is cross-platform.
Sorry, I don’t have a go-to recommendation for the receiving end. In theory anything that can host WebDAV, SSH/SFTP, or an S3 endpoint would do the job.