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

TwelveMonkeys ImageIO: Additional plug-ins and extensions for Java's ImageIO

Create custom vector tiles from OpenStreetMap and other data sources with Postgis and Java.

Cloud Native GeoServer is GeoServer ready to use in the cloud through dockerized microservices.

JPX - Java GPX library

A java encoder and decoder for vector tiles according to Mapbox vector tile spec

Marlin is the FAST Java2D antialiasing rasterizer derived from OpenJDK Pisces (shape)

Immutable in-memory R-Tree and R*-Tree for Java with Iterable API

Spatial analysis tools for Geotools, Geoserver WPS, uDig Statistics Toolbox

Manage GeoServer using a CLI similar to Spring Roo

Commandline application for manipulating geometry.

Lightweight spatial library for the JVM

Parboiled WKT is a Java Library to parse WKT.

A scripting language to create and analyse raster images

Geometry web services

Well Known Geometry

Official GeoTools repository