Gentoo Linux

Gentoo

Gentoo Linux Gentoo is a source-based, free operating system based on either Linux or FreeBSD that can be automatically optimized and customized for just about any application or need. Extreme configurability, performance and a top-notch user and developer community are all hallmarks of the Gentoo experience. ...
Debian

Debian

DebianDebian is a GNU/Linux operating system. It probably has the longest release cycle of any distro, but counts rock-solid stability as a key feature. ...