The JTS Topology Suite is a Java library for creating and manipulating vector geometry.

Java Mapbox Vector Tile Library for Encoding/Decoding

坐标边界查询工具：使用jts库从省市区县乡镇边界数据或geojson边界数据文件中查找出和任意点、线、面有相交的矢量边界，提供HTTP API接口，内存占用低，性能优良（1秒可查1万个以上坐标对应的城市信息）

GeoJSON support for Google gson library

JTS Topology Suite

利用高德导航接口创建交通路网模型

DataNucleus support for persisting geospatial types

Commandline application for manipulating geometry.

Utility methods for JTS geometries

The application demonstrates how a custom datatype can be added to a CUBA application.

Java Mapbox Vector Tile Library for Encoding/Decoding

Conversion utility from JTS geometries to AWT shapes

Treasure hunt engine for PG Computational Geometry

Clone of the JTS repository from SourceForge

Minkowski sum/difference computation, built on top of JTS

Utilities for repairing broken / invalid geometries

OGC/GIS functions and extensions for Dremio

Various index data structures for JTS geometries

Utilities for drawing JTS geometries to various outputs