PlugUI is a sysadmin Web interface for small ARM-based devices running Arch Linux ARM. It will run on other distributions, but the package manager is geared to use pacman.
The ArchLinux Development Stack provides a whole stack of applications needed to support development projects during their life cycle on ArchLinux servers. The packages include Nexus, Sonar, Hudson, and Redmine.
ArchServer is a distribution of Arch Linux for servers. It is designed to be more stable instead of using rolling-release update methods.
A G-code meta compiler.
A system to allow unattended reboots with an encrypted root file system.