Naemon / Nagios plugins
A small shell scripts to make a full backup or just some tables from a MySQL database with the option to store the backup off-site to a SSH server with SCP.
Flashboot is a collection of scripts to build OpenBSD for flash devices with a minimalistic kernel custom made for Soekris and others. There are also images for USB sticks or Live-CD for tho who wish to test OpenBSD without installing it on a physical or virtual machine. Flashboot is developed by Damien Miller and later on by several other developers
The lastest version of Flashboot is customized to build OpenBSD 5.0 with available erratas.