BitKeeper vs Gitless: What are the differences?
What is BitKeeper? Enterprise-ready version control, now open-source. BitKeeper is a fast, enterprise-ready, distributed SCM that scales up to very large projects and down to tiny ones.
What is Gitless? An experimental version control system built on top of Git. Gitless is an experiment to see what happens if you put a simple veneer on an app that changes the underlying concepts. Because Gitless is implemented on top of Git (could be considered what Git pros call a "porcelain" of Git), you can always fall back on Git.
BitKeeper and Gitless can be categorized as "Version Control System" tools.
Gitless is an open source tool with 1.44K GitHub stars and 76 GitHub forks. Here's a link to Gitless's open source repository on GitHub.