C library for working with triangulated surfaces, commonly used in geospatial and computational geometry applications.

C/C++ library for reading, writing, and transforming geospatial raster and vector data across 100+ formats.

C library for cartographic coordinate system transformations and map projections.

C library extending SQLite with spatial geometry functions and geographic data support.

C++ wrapper library around CGAL for 3D computational geometry operations, used by PostGIS.

C shared library for constructing and manipulating topology networks and geometries.

C++ library for computational geometry operations, used by spatial databases and GIS tools.

C++ shared library for rapid encoding and decoding of raster images using LERC (Limited Error Raster Compression) format with user-defined error bounds.

C library for reading and writing GeoTIFF geospatial metadata in TIFF files.

C++ library for parsing, generating, and manipulating KML and KMZ geographic data files.

C library for reading MaxMind DB geolocation and IP intelligence database files.