JackTrip - A System for High-Quality Audio Network Performance over the Internet.
JackTrip is a Linux and Mac OS X-based system used for multi-machine network performance over the Internet. It supports any number of channels (as many as the computer/network can handle) of bidirectional, high quality, uncompressed audio signal steaming.
It is currently being developed and actively tested at CCRMA by the SoundWIRE group.
Jacktrip is now hosted in its Google Code Website.
Installation, requirements and usage instructions for the old version can be found here.
JMess - A utility to save your audio connections (mess).
JMess can save (and load) jack connections with a simple command line. This allow the flexibility of integrating it to shell scripts or other programs, and to operate jack connections remotely.
Installation, requirements and usage instructions here.