Erika Enterprise is a free of charge, open-source implementation of the OSEK/VDX API.
Embedded Linux Distribution and Development Tools. The easier and cheaper way to develop your embedded device.
RT-Druid is composed by a set of plugin for the Eclipse Framework.
Scicos is a modeler/simulator of hybrid dynamical systems.
SMCube (or SM3) is a State Machine System Modeler, a software written in C++ that allows, through a friendly QT interface.