The Systems Biology Workbench (SBW) is a framework for application intercommunications. It uses a broker-based, distributed, message-passing architecture, supports many languages including Java, C++, Perl & Python, and runs under Linux,OSX & Win32. By default, the Broker opens a port for inter-Broker communications by searching for the first free port in the range 10102 through 10202, inclusive. By default, in Fedora this port range is not opened. See man-page for further informations. libSBW is the C++ Broker port from the original SBW Broker (written in Java) to C++. The current version implements all the functionality for the local side. Meaning if you will just use the Broker on a single machine you should be f ine using the C++ Broker.