YES Linux is a server appliance for small and medium size networks to quickly and easily build an Internet presence. It completely installs in under 10 minutes and 2 screens. It features a secure Web server, a secure email server with Web-based email, a firewall, spam filtering, WebDAV support, an FTP server, an SSH server, a PostgreSQL database, the Resin J2EE server, Java, Apache Ant, PHP 5, Autonomous Backups, and complete Web-based administration.
OpenVPS is a set of software built on top of the Linux VServer aimed specifically at Web Hosting. It is not another set of kernel patches, but a set of scripts to create virtual servers, collect resource utilization information, and provide an interface to the customer as well as the administrator.
Endian Firewall is an all-in-on Linux security distribution that turns any system into a full-featured security appliance. It features a stateful packet inspection firewall, application-level proxies for various protocols (HTTP, POP3, SMTP), anti-virus support, virus and spam filtering for email traffic (POP and SMTP), content filtering of Web traffic, and a "hassle free" VPN system based on OpenVPN.
footprint is a tool that makes it easier to create and manage kickstart files. It allows you to define systems, create profiles for systems, and macros per distribution. It can create kickstart files on the fly, make custom initrd (ramdisks), create custom bootfloppies, and can manage your DHCP and PXE configuration.
PyRPM is an experimental project to look at RPM package management. It is a Python module and a collection of scripts that provide similar functionality as rpm, yum, and related software. It mainly deals with RPM packages, the RPM database in /var/lib/rpm, comps.xml files, and yum repositories (called repo data).
Gendist is a live CD generator system. It has nice features like multi-distribution CDs, support for grub, isolinux, and gfxboot boot managers, and a modules system for configuring your distribution in live mode. This system is independent from the kernel version (but need unionfs and squashfs support). It only works on Debian Sid or Ubuntu Dapper.