Solus
Solus is a Linux distribution built from scratch. It uses a forked version of the PiSi package manager, maintained as "eopkg" within Solus, and its flagship edition uses the Budgie desktop environment.
VS
CuerdOS
CuerdOS is a Debian-based GNU/Linux distribution with focus on stability, efficiency and performance. It comes with a series of optimisations, such as performance and memory consumption improvements.