Kopia

Kopia is a modern backup engine: content-addressed snapshots, aggressive deduplication, compression and client-side encryption, with both a CLI and a desktop app so you are not forced to choose between scriptability and convenience.

It supports many storage backends and its snapshot model makes frequent backups cheap. The concepts (repositories, policies, snapshots) take a moment to internalize, but they pay off on larger setups.

A strong pick if you want restic-class engineering with a GUI on top.