The document discusses experiences using the Global Water Partnership (GWP) ToolBox for integrated water resources management (IWRM) in different regions. It summarizes how the ToolBox has been used to build capacity, support IWRM planning, and assess water governance in countries in Central and Eastern Europe, Central Asia, Southeast Asia, Africa, and other regions. Lessons learned include that the ToolBox provides a clear framework for IWRM but must be adapted to local contexts, and that its tools are best used as references rather than strict guidelines.