This NBS Tools Catalogue is developed by Wageningen Environmental Research, Delatares and University of Bologna under the frame of the Adaptive Cities Through integrated Nature-Based Solutions (ACT on NBS) project, funded by EIT-Climate KIC. This database is an overview of what has been developed in terms of NBS and climate resilience tools in cities. The catalogue compiled 70 tools (August 2020) from existing inventories from EU granted projects in NBS, other international projects, internet searches (desktop research), interviews with different EU cities, workshops organized by ACT on NBS and from our professional networks.