Opensourceinfo

Annvix is a secure Linux server distribution based on Mandriva Linux. The goal is to provide an easy-to-use server distribution with high security features including a secure kernel, gcc with SPP stack protection patches, and secure defaults for all services. It also includes unique features such as running all services under runit and auditing tools such as rsec (msec's baby brother), tripwire, snort, and chkrootkit. It uses urpmi for package management.

Linux Netwosix is a powerful, optimized GNU/Linux distribution for servers and Network Security related jobs. It can be also used for special operations as penetration test with its big collection of softwares and sources security oriented. It's a ligh distribution created for the requirements of every SysAdmin and it's very portable and highly configurable. Our philosophy is to give a big liberty of configuration to the SysAdmin. Only in this way he/she can configure a powerful and stable server machine. Linux Netwosix have also a powerful ports system (Nepote) similar to the xBSD systems but more flexible and usable.

Owl (Openwall GNU/*/Linux) is a security-enhanced server operating system with Linux and GNU software as its core. It includes a complete build environment capable of rebuilding the entire system from source, supports multiple architectures (x86, SPARC, and Alpha), and offers some compatibility for packages developed for other major Linux distributions. The primary approach to security is proactive source code review, but several other approaches are used as well.