PacStats is able to analyze the log and the lib directory of the ArchLinux package manager (pacman) and generate statistical charts.
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.
Paktahn is a frontend for the ArchLinux Pacman database and the Arch User Repository (AUR).
The Horde contact manager.