Seagull is a multi-protocol traffic generator. Especially targeted towards IMS, Seagull supports Diameter (RFC3588 and all applications) over TCP/SCTP and IPv4/IPv6 , TCAP (over SS7 or Sigtran), XCAP over HTTP and Radius.
Snack combines a high-level object oriented language (think JavaScript) with a bytecode execution engine. An example air traffic control game (a port of the classic ATC) and a text adventure framework are included.