Funtoo Linux is a Gentoo-based OS that uses a git-based Portage tree. Run by Daniel Robbins, creator of Gentoo.
Ranked in these QuestionsQuestion Ranking
Pro Like Gentoo but more streamlined
The profile system improves portage's usability without losing the soul of Gentoo.
Pro No systemd
Still allowing one to run, for example, full desktop environment such as Gnome 3.20.
Pro Portage tree split into kits
This allows more fine-grained control over package updates, and packages can be now tied together inside the kit to minimize dependency breakage while upgrading.
Pro Use flags that are suitable for a task or environment are grouped into Profiles
It allows selecting, for example, gnome or desktop profile with most of the sane use flags enabled inside the profile.
Pro Stage3 archive coming with pre-compiled kernel based on Debian's kernel
Pro Simpler template-based network configuration
Pro `boot-update` to take care of bootloader configuration
A tool to update your grub config.
Pro Funtoo Linux offers a variety of stage3 builds
Customized to a variety of CPU microarchitecture variants from AMD, ARM, and Intel.
Pro Stage3 sources are built using the Funtoo Linux tool 'metro'
It's a sophisticated replacement for Gentoo's build tool 'catalyst'.