SharpSpatial

SharpSpatial is a lightweight geospatial library for .NET, built as a modern alternative to SqlGeography and SqlGeometry, with full support for .NET Core and custom geodesic calculations written entirely in C#.

It combines the power of NetTopologySuite, GeoAPI, and ProjNET4GeoAPI for planar operations, while offering accurate geodesic calculations (Haversine and Vincenty) and basic projection capabilities (Spherical Mercator).

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✨ Why use SharpSpatial?

• ✅ Pure .NET Core – no dependency on SQL Server or legacy types.
• ✅ Custom geodesic engine – Vincenty & Haversine distance, buffering, and more.
• ✅ Planar geometry support – thanks to NetTopologySuite.
• ✅ Mercator projection – convert from/to spherical Mercator (EPSG:3857).
• ✅ Developer-friendly – clean API, easy integration.

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⚠️ Limitations

While useful in many real-world applications, SharpSpatial is not a full GIS engine.
Here’s what it doesn’t do (yet):

• ❌ No support for arbitrary coordinate reference systems (CRS)
• ❌ Limited projections (only WGS84 and Mercator)
• ❌ Simplified geometry model (common types only)

Still, for many server-side or data-processing tasks, it offers exactly what’s needed — with minimal overhead.