Jujutsu is built on top of Git, so it can benefit tools in the same ecosystem (forges, CIs, code quality tools, IDEs, plugins, etc).

I have only played a little with jj and hg, but I felt that jj has a more modern UX, learning from years of Git existence (and even influencing Git, like the new `git history` command [1]). On the other hand, hg was created in the same month as Git, both trying to improve the experience of the VCSs available at the time (april 2005).

[1] https://lore.kernel.org/git/20250819-b4-pks-history-builtin-...