There's Openbsd's got[0].
Fossil was created by Richard Hipp, who's also the creator of SQLite.
Fossil as a version management system gets completely out of the way.
In all the years over used Fossil, I've rarely had to use more than a few commands and have never had to understand any underlying concepts, let alone trying to figure out how to use the commands.
Additionally, fossil also comes with a wiki and a bug tracker, which is a bonus.