wxServDisc is a simple-to-use C++ class to facilitate Zeroconf service discovery in any wxWidgets application, without any dependencies other than wxWidgets. A sample application is also included.
DNSSD for Firefox (formerly BonjourFoxy) adds support for discovering Web sites via DNS Service Discovery (Bonjour) to Firefox.
An ncurses RSS (and more) reader.
Billing and trouble ticketing for ISPs, VoIP, and other online businesses.