Powerdns Tango is a simple Web frontend for PowerDNS written in the Perl dancer framework. Its design philosophy is to (hopefully) make DNS management simple, easy, and as quick as possible. It supports both MySQL and PostgreSQL backends.
VDnsAdm is a Web-based management GUI for nameservers running PowerDNS with a MySQL backend.
A hotel booking and accounting package.
An extensible image processing framework for Java.