OAMP stands for (O)penBSD + (A)pache + (M)ySQL + (P)ostgreSQL + PHP. It is the OpenBSD cousin of LAMP, except that it also provides the SQlite database engine, Perl, Ruby, and Python. In addition, OAMP provides phpMyAdmin and phpPgAdmin for easy administration of MySQL and PostgreSQL over the Web.
FreeBSDShield is a DShield.org reporting client for FreeBSD and the ipfw firewall. It allows you to report attempted security breaches to the DShield cooperative firewall logging effort, which in turn helps the Internet Storm Center (and netizens at large) track trends in network security and catch emerging vulnerabilities.
EmSniff is an application that helps you to capture network packets. It differs from TCPDump in that it runs as a service instead of an application. This makes it possible to capture packets in the background. This can help applications like Wireshark to be more secure since they don't have to run with root privileges anymore. They only have to connect to the EmSniff server via libemsniff.
Madrigal is a network-controlled real time music visualization program (i.e. VJing software). It consists of a server that runs on the computer recording the audio, rendering and displaying the visualization, and a GTK2 client (with a hildonized version available for the Nokia 770) that is used to organize visualizations and switch between them.