The GNU ccScript package offers a class extensible threaded embedded
scripting engine for use with GNU Common C++. This engine is also used
in GNU Bayonne (the GNU telephony application server package) and other
parts of GNUCOMM (the GNU telephony meta-project). This engine differs
from traditional scripting systems in that it is used to script near
real-time state-event systems through deterministic callback step
execution rather than the linear and non-deterministic fashion of
embedded script systems such as tcl, libguile, etc.