  The challenges related to dependable complex systems are heterogeneous and
involve different aspects of the system. On one hand, the decision-making
processes need to take into account many options. On the other hand, the design
of the system's logical architecture must consider various dependability
concerns such as safety, reliability, and security. Moreover, in case of
high-assurance systems, the analysis of such concerns must be performed with
rigorous methods. In this paper, we present the new development of CHESS, a
cross-domain, model-driven, component-based, and open-source tool for the
development of high-integrity systems. We focus on the new recently distributed
version of CHESS, which supports extended model-based development and analyses
for safety and security concerns. Finally, we present contributions of CHESS to
several international research projects.
