Openwall GNU/*/Linux is a security-enhanced operating system intended as a server platform.
Openwall GNU/*/Linux 2.0 has been released: "After many Owl-current snapshots, Owl 2.0 release is finally out. Owl 2.0 is built around Linux kernel 2.4.32-ow1, glibc 2.3.6 (with our security enhancements), GCC 3.4.5, and recent versions of over 100 other packages. It offers binary- and package-level compatibility for most packages intended for Red Hat Enterprise Linux 4 (RHEL4) and Fedora Core 3 (FC3), as well as for many FC4 packages. Additionally, Owl 2.0 uses our new installer, making installation a lot easier than it used to be for Owl 1.1 and below."