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

Java 75,371 25,596 Updated Nov 5, 2025

Graphs for Everyone

Java 15,332 2,530 Updated Oct 30, 2025

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

Java 14,673 632 Updated Nov 4, 2025

Apache Doris is an easy-to-use, high performance and unified analytics database.

Java 14,554 3,591 Updated Nov 5, 2025

Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

Java 13,558 1,180 Updated Apr 17, 2024

🔎 Open source distributed and RESTful search engine.

Java 11,830 2,294 Updated Nov 5, 2025

The Metadata Platform for your Data and AI Stack

Java 11,182 3,253 Updated Nov 5, 2025

The world's fastest open query engine for sub-second analytics both on and off the data lakehouse. With the flexibility to support nearly any scenario, StarRocks provides best-in-class performance …

Java 10,842 2,181 Updated Nov 5, 2025

Free and open log management

Java 7,858 1,096 Updated Nov 5, 2025

OWASP dependency-check is a software composition analysis utility that detects publicly disclosed vulnerabilities in application dependencies.

Java 7,280 1,380 Updated Nov 5, 2025

Apache NiFi

Java 5,795 2,886 Updated Nov 5, 2025

JanusGraph: an open-source, distributed graph database

Java 5,663 1,211 Updated Nov 5, 2025

Serve, optimize and scale PyTorch models in production

Java 4,349 889 Updated Aug 6, 2025

Apache Nutch is an extensible and scalable web crawler

Java 3,087 1,258 Updated Oct 15, 2025

Automated mass refactoring of source code.

Java 3,068 469 Updated Nov 5, 2025

AWS Usage Tool

Java 2,880 431 Updated Oct 7, 2022

Synthetic Patient Population Simulator

Java 2,812 794 Updated Nov 5, 2025

Supplementary resources for the AWS Lambda Developer Guide

Java 2,608 1,722 Updated Aug 26, 2025

Security engine for Java (authentication, authorization, multi frameworks): OAuth, CAS, SAML, OpenID Connect, LDAP, JWT...

Java 2,496 699 Updated Nov 5, 2025

An open source multi-modal trip planner

Java 2,457 1,084 Updated Nov 5, 2025

An Open Standard for lineage metadata collection

Java 2,173 400 Updated Nov 5, 2025

Collect, aggregate, and visualize a data ecosystem's metadata

Java 2,053 375 Updated Nov 5, 2025

Web and mobile application security training platform

Java 1,408 491 Updated Oct 15, 2025

First open-source data discovery and observability platform. We make a life for data practitioners easy so you can focus on your business.

Java 1,364 129 Updated Feb 19, 2025

PacBot (Policy as Code Bot)

Java 1,304 281 Updated Dec 8, 2022

cBioPortal for Cancer Genomics

Java 876 741 Updated Nov 5, 2025

ARX is a comprehensive open source data anonymization tool aiming to provide scalability and usability. It supports various anonymization techniques, methods for analyzing data quality and re-ident…

Java 677 230 Updated Oct 1, 2025

Precision genomics for everyone, everywhere. Powered by private AI.

Java 165 70 Updated Oct 8, 2025