Caudium WebServer is a single process multi-threaded webserver. It has a built-in pre-processing language and includes an easy to use web-based configuration interface.
Open Firewall is a way to agregate some good technologies to make a complete, robust and fast application level firewall. It will provide an open framework for developpers who wish to implement protocol filters.
PlutoStatus is a system to publish the current status of your systems. It includes mirroring.