From the Castalia team: Castalia 3.0 is finally here! It runs with OMNeT 4.x and it offers a complete new way to run simulations and view the results. It has a brand new radio module. It implements the Baseline MAC for Body Area Networks, proposed by the IEEE 802.15 Task Group 6. Read the new User's Manual to get started! The new release can be downloaded from the Castalia home page.
Castalia is a simulator for wireless sensor networks (WSNs), body area networks (BANs), and generally networks of low-power embedded devices; it is developed at NICTA Australia.