Java

Apache Sedona

OSS

Distributed spatial processing engine for large-scale vector and raster data with spatial SQL.

deegree

OSS

Java framework for spatial data infrastructures and OGC web services.

Alternative to ArcGIS

GraphHopper

OSS

Fast and memory-efficient routing engine for OpenStreetMap with many vehicle profiles.

Alternative to HERE Technologies, TomTom, Google Maps Platform

H3

OSS

Uber's hexagonal hierarchical geospatial indexing system for efficient spatial analysis.

GeoServer

OSS

Open-source server for sharing geospatial data. Supports WMS, WFS, WCS, and more.

Alternative to ArcGIS, Mapbox

Photon

OSS

Low-latency forward and reverse geocoder for OpenStreetMap data.

Alternative to Google Maps Platform, HERE Technologies

Planetiler

OSS

Fast tool for generating planet-scale vector tiles from OpenStreetMap in hours, not days.

Alternative to Mapbox

openrouteservice

OSS

Open-source routing API with directions, isochrones, and matrix services built on OpenStreetMap data.

Alternative to Google Maps Platform, HERE Technologies, TomTom

GeoTools

OSS

Open-source Java GIS toolkit for geospatial formats, standards, and services.

GeoMesa

OSS

Distributed spatio-temporal storage and query suite for geospatial data.

FlatGeobuf

OSS

Binary geospatial vector format with fast streaming via HTTP range requests.

GeoNetwork

OSS

Catalog application for publishing and searching spatial data and service metadata.

GeoTrellis

OSS

Scala library for raster and vector geospatial processing, with Spark and distributed stores.

Library that adds geospatial and temporal indexing to distributed key/value stores.

GeoWebCache

OSS

Java tile cache for accelerating WMS, WMTS, and other map tile services.

H2GIS

OSS

Spatial extension for H2 with OGC-compatible spatial SQL and analysis tools.

JTS Topology Suite

OSS

Java library of 2D spatial predicates and functions; the design behind GEOS and JSTS.

Spatial4j

OSS

General purpose geospatial library for Java, a LocationTech project.