OpenSIPS is a mature implementation of a SIP
server/proxy. It is more than a SIP proxy/router,
as it includes application-level functionalities.
OpenSIPS, as a SIP server, can server as the core
component of any SIP-based VoIP solution.
A mount and ACPI GUI for NetBSD.
A programming language with the ease of a scripting language and the performance of a compiled language.