NetTopologySuite/NetTopologySuite

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

1714 stars · 338 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

NetTopologySuite is a .NET library for modeling and manipulating 2D linear geometry, ported from the Java JTS Topology Suite. It provides geometric predicates, functions, and spatial operations conforming to the OGC Simple Features Specification.

Use cases

• compute intersections and unions of polygons in .NET
• check whether two geometries overlap or touch
• build spatial indexes for point-in-polygon queries
• read and write WKT and WKB geometry formats
• buffer and simplify shape geometries
• add spatial geometry support to Entity Framework Core
• implement GIS features in a C# application

When to choose

• you need OGC Simple Features compliant geometry operations in .NET
• you want a mature, well-tested port of JTS for C#
• you need spatial predicates, overlays, or buffering without a full GIS stack

When to avoid

• you need 3D geometry or full raster/GIS processing
• you want a ready-made mapping or visualization application rather than a geometry library
• you are not on a .NET platform

Facets

library · maturity stable

geospatial math sdk dotnet cross-platform gis geometry topology simple-features jts-port spatial-analysis geospatial maps algorithms

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