When comparing Darcs vs Fossil, the Slant community recommends Fossil for most people. In the question“What are the best version control systems?” Fossil is ranked 3rd while Darcs is ranked 4th. The most important reason people chose Fossil is:
Fossil includes source code management, bug tracking, a wiki, and technotes. It even includes its own web server, though it can fairly easily be incorporated into other webservers.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Patches instead of snapshots
Pro Automatic dependency management
Pro Very complete
Fossil includes source code management, bug tracking, a wiki, and technotes.
It even includes its own web server, though it can fairly easily be incorporated into other webservers.
Pro Self-contained
A Fossil repository is contained in a single file.
Pro Cross-platform
Fossil can run on Linux, Mac, BSD derivatives and on Windows.
Pro Very easy to configure as self-hosted
Single, stand-alone executable, including web server.
Pro Needs very few server resources
Since Fossil is a distributed VCS on top of being a bug tracker, it needs very few server resources.
Cons
Con Only a web interface or CLI
Fossil's bug tracker only works with the web interface or the command-line interface. There's no native GUI client supporting it.
There are some independent GUI clients out there, but none of them support Fossil's full range of abilities.