WaterGEMS is a superset of WaterCAD. WaterGEMS includes a standalone version plus the integration with three platforms MicroStation, AutoCAD, and ArcGIS. Additionally, WaterGEMS comes with six modules for optimal operation planning and automatized model calibration that are not included in WaterCAD: 1) Pipe Renewal Planner 2) Darwin Designer 3) Darwin Calibrator 4) Darwin Scheduler 5) Skelebrator 6) SCADAConnect.