Bup satisfies both. https://github.com/bup/bup https://github.com/bup/bup But the frontend is kinda bare-bones. In many cases, it's git. I have heard that at

Bup satisfies both. https://github.com/bup/bup https://github.com/bup/bup But the frontend is kinda bare-bones. In many cases, it's git. I have heard that attic is similar but more fleshed-out. But I have not tried it myself. https://github.com/jborg/attic https://github.com/jborg/attic