The JTS Topology Suite is a Java library for creating and manipulating vector geometry. It also provides a comprehensive set of geometry test cases, and the TestBuilder GUI application for working with and visualizing geometry and JTS functions.

JTS is a project in the LocationTech working group of the Eclipse Foundation.

Currently JTS targets Java 8 and above.

• GitHub Repo
• Maven Central group

• LocationTech Home
• GitHub web site

• Mailing List
• Gitter Channel

• Stack Overflow
• GIS Stack Exchange

JTS is open source software. It is dual-licensed under:

• Eclipse Public License 2.0
• Eclipse Distribution License 1.0 (a BSD Style License)

See also:

• License details
• Licensing FAQ

• Javadoc for the latest version of JTS
• FAQ - Frequently Asked Questions
• User Guide - Installing and using JTS
• Tools - Guide to tools included with JTS
• Developing Guide - how to build and develop for JTS
• Upgrade Guide - How to migrate from previous versions of JTS

• Version History
• History from the previous JTS SourceForge repo is in the branch _old/history
• Older versions of JTS can be found on SourceForge
• There is an archive of distros of older versions here

If you are interested in contributing to JTS please read the Contributing Guide.

• GEOS - C++
• NetTopologySuite - .NET
• JSTS - JavaScript
• dart_jts - Dart

• Shapely - Python wrapper of GEOS
• R-GEOS - R wrapper of GEOS
• rgeo - Ruby wrapper of GEOS
• GEOSwift- Swift library using GEOS

There are many projects using GEOS - for a list see the GEOS wiki.