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35 stars written in Java
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Free and Open Source, Distributed, RESTful Search Engine

Java 76,386 25,834 Updated Mar 30, 2026

The official home of the Presto distributed SQL query engine for big data

Java 16,668 5,532 Updated Mar 30, 2026

Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud storage, ensuring privacy and control over your data.

Java 14,849 1,276 Updated Mar 30, 2026

Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)

Java 12,670 3,548 Updated Mar 30, 2026

OpenRefine is a free, open source power tool for working with messy data and improving it

Java 11,791 2,132 Updated Mar 28, 2026

Web-based notebook that enables data-driven, interactive data analytics and collaborative documents with SQL, Scala and more.

Java 6,608 2,818 Updated Mar 30, 2026

Open source routing engine for OpenStreetMap. Use it as Java library or standalone web server.

Java 6,384 1,897 Updated Mar 29, 2026

Example code from Learning Spark book

Java 3,900 2,409 Updated Jul 12, 2025

Extracts Exif, IPTC, XMP, ICC and other metadata from image, video and audio files

Java 2,773 500 Updated Mar 26, 2026

A cluster computing framework for processing large-scale geospatial data

Java 2,317 753 Updated Mar 30, 2026

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

Java 2,197 464 Updated Mar 6, 2026

🐘 Elasticsearch real-time search and analytics natively integrated with Hadoop

Java 2,033 992 Updated Mar 26, 2026

Flexible tool to build planet-scale vector tilesets from OpenStreetMap data fast

Java 1,994 174 Updated Mar 30, 2026

Multi Model Server is a tool for serving neural net models for inference

Java 1,026 230 Updated May 20, 2024

Implementation of GeoHashes in java. We try to be/stay compliant to the spec, as far as possible.

Java 1,015 314 Updated Jul 3, 2022

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 …

Java 816 195 Updated Feb 28, 2026

The Esri Geometry API for Java enables developers to write custom applications for analysis of spatial data. This API is used in the Esri GIS Tools for Hadoop and other 3rd-party data processing so…

Java 704 265 Updated Apr 16, 2024

Java map matching library for integrating the map into software and services with state-of-the-art online and offline map matching that can be used stand-alone and in the cloud.

Java 689 187 Updated Apr 14, 2023

Geohash utitlies in java

Java 432 91 Updated Feb 23, 2026

The Spatial Framework for Hadoop allows developers and data scientists to use the Hadoop data processing system for spatial data analysis.

Java 376 158 Updated Mar 2, 2026

Java bindings for H3, a hierarchical hexagonal geospatial indexing system

Java 328 62 Updated Feb 19, 2026

Java Library for JD-Core, a java decompiler

Java 257 108 Updated Jan 10, 2021

MrGeo is a geospatial toolkit designed to provide raster-based geospatial capabilities that can be performed at scale. MrGeo is built upon Apache Spark and the Hadoop ecosystem to leverage the stor…

Java 211 64 Updated Dec 16, 2022

ElasticGeo provides a GeoTools data store that allows geospatial features from an Elasticsearch index to be published via OGC services using GeoServer.

Java 172 84 Updated May 25, 2022

A converter for the OSM PBFs to Parquet files

Java 97 33 Updated Sep 1, 2023

GeoFlink: A Distributed Framework for the Real-time Processing of Spatial Streams

Java 69 25 Updated Jul 26, 2024

Java implementation of the STAC spec

Java 54 23 Updated Jul 5, 2023

Future home of Geospatial features for OpenSearch

Java 46 49 Updated Mar 26, 2026

Metadata Harvester for Esri Geoportal Server

Java 41 26 Updated Mar 30, 2026
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