CBD-11 is a software package developed by Danfoss, a manufacturer of flow, temperature and pressure control instruments. CBD-11 is a computer-aided design/engineering (CAD/CAE) toolset which provides a comprehensive suite of tools for the design of hydraulic, pneumatic and electrical systems and circuits. It features an interactive 2D/3D design environment, a library of components, physics-based simulation and analysis capabilities, an integrated system sizing tool, an intuitive user interface, and a range of tools to help with the automation of system design tasks. It is suitable for engineering professionals in both research and development as well as production, maintenance or field engineering roles.