Fossil

The design looks pretty reasonable. The "autosync" features sounds a lot like "bind" in bzr.
The home page mentions bug tracking, but I couldn't find any details other than a technical
description of the ticket data format. It's either hidden well, or a future feature.

Too bad it's written in C. Bias on my part, but I would much rather see an app like this
written in a higher-level language, using C where necessary as a speed optimization or to
create a highly reusable library. 

The author is proud that the whole system is a single executable file with few dependencies.
That's nice, but for me, the benefits of faster development, easier maintenance, and
crash-safety are more compelling. If the author only knows C, I understand the choice. It's
still unfortunate. Might be fun to implement a clone in another language.