| Feature | Description | |---------|-------------| | 2D & 3D mesh generation | Create structured/unstructured meshes (triangles, quadrilaterals, hybrid) | | Model support | SRH-2D, TUFLOW, ADCIRC, CMS-Flow, BOUSS-2D, CGWAVE, FESWMS, and more | | River & floodplain modeling | HEC-RAS import/export, 1D/2D coupling | | Coastal engineering | Wave transformation, harbor agitation, sediment transport | | GIS integration | Direct read/write of shapefiles, GeoTIFF, WMS data | | Data visualization | Contours, vectors, animations, time series plots | | Model calibration | Parameter estimation tools, sensitivity analysis | | 64-bit optimization | Access to >4GB RAM, essential for large coastal or flood models |

| Software | Purpose | Platform | SMS-like feature | |----------|---------|----------|------------------| | + Crayfish plugin | 2D flood visualization, mesh generation | Windows/Linux/macOS | View SMS outputs, basic mesh creation | | BASEMENT (ETH Zurich) | 2D hydrodynamics, sediment transport | Windows/Linux | Similar to SRH-2D, no GUI | | Anuga (ANUGA Hydro) | 2D shallow water wave equation | Windows/Linux/Python | Coastal/flood modeling, Python-based | | OpenFOAM + waves2Foam | Advanced CFD for waves & structures | Linux/Windows (WSL) | Extremely powerful, steep learning curve | | HEC-RAS (USACE) | 1D/2D river hydraulics | Windows | Most similar GUI to SMS, completely free |

Aquaveo SMS (Surface-water Modeling System) is a proprietary, paid software product used extensively by hydraulic engineers, environmental consultants, and researchers. Downloading it illegally violates copyright laws, poses significant security risks, and deprives developers of compensation for their work.