We are happy to announce that safeTbox version 1.0 is available from now on for all registered users of this website. With this initial version of our safety modeling tool, you will have the possibility to integrate failure model specifications into existing system design models in the general purpose modeling tool Enterprise Architect by Sparx Systems. These system design models can either be created with the SysML 1.4 profile extension of Enterprise Architect or with our own architecture modeling profile having plenty of usability features supporting the efficient creation of models. Regarding SysML, we primarily support the integration of blocks and component fault tree analysis (CFT). This enables you to define complex failure behavior in a modular and compositional way being formally connected to your system design models. Based on these models, qualitative and quantitative failure analyses can be performed.