The problem is that Github does a lot.
However, I consider that there is still not a great UI for the core service, in special for a complex project.
In the other hand, I bet jujutsu has the best basic take, and is still missing a good forge.
Unfortunately, naming things is hard, and JujitsuHub just doesn't roll off the tongue the same way that GitHub does. jjhub? forgesu?
Xit has a better “take” on Git. Pijul & Darcs still have better fundamentals.