The JTS Topology Suite is a Java library for creating and manipulating vector geometry.
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Updated
Mar 6, 2026 - Java
A geographic information system (GIS) is a conceptualized framework that provides the ability to capture and
analyze spatial and geographic data. GIS applications (or GIS apps) are computer-based tools that allow the
user to create interactive queries (user-created searches), store and edit spatial and non-spatial data,
analyze spatial information output, and visually share the results of these operations by presenting them as
maps.
The JTS Topology Suite is a Java library for creating and manipulating vector geometry.
Neo4j Spatial is a library of utilities for Neo4j that faciliates the enabling of spatial operations on data. In particular you can add spatial indexes to already located data, and perform spatial operations on the data like searching for data within specified regions or within a specified distance of a point of interest.
MeteoInfo: GIS, scientific computation and visualization environment.
Main repository for developing the 1.x versions of GAMA
Java port of the Proj.4 library for coordinate reprojection
JPX - Java GPX library
A open-source model to compute noise maps.
Geo Assist is a spatial library to manage spatial data in-memory.
A component of MapFish for printing templated cartographic maps. This module is the Java serverside module.
Delaunay and Constrained Delaunay Triangulations in Java, providing high-performance utilities for modeling surfaces with support for Lidar LAS files, Digital Elevation Models (DEM), finite element analysis, path planning, natural neighbor interpolation, and other applications of Triangulated Irregular Networks (TIN)
Fast and storage-efficient spatial database engine for OpenStreetMap data
Java desktop application that allows the creation and editing of OGC Styled Layer Descriptors for use with GeoServer. See blog for more project information (https://robward-scisys.github.io).
This is the main geOrchestra Spatial Data Infrastructure repository, which hosts the source code.
A geometry model that conforms to the OGC Simple Features for SQL specification.