Personally haven’t used jj but as far as dvcs’s are concerned Fossil is great complement to Git because it does things differently than git and truly has a decentralized feel.

The autosync feature is really nice too, and you can store backup repos in cloud storage folders and auto sync to those as well.

Fossil is delightful and definitely nails a feeling of decentralization that I think we ruined completely with `git` by constantly centering around centralized repositories.

I also find it interesting that so many people want to switch to something that's not `git` but are simultaneously somehow super invested in it being basically just `git`.

Most teams could switch to Fossil and just have a better time overall. It's made for smaller, high-trust teams, `git` is not. Fossil also manages to actually support external contributions just fine; it's just that it's not the default.