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Starred repositories

25 stars written in Java
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Google core libraries for Java

Java 51,473 11,139 Updated Jun 13, 2026

Free universal database tool and SQL client

Java 50,548 4,232 Updated Jun 14, 2026

Apache Kafka - A distributed event streaming platform

Java 32,817 15,272 Updated Jun 14, 2026

The automation tower defense RTS

Java 27,891 3,469 Updated Jun 14, 2026

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

Java 26,402 7,557 Updated Jun 15, 2026

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex di…

Java 24,456 4,696 Updated Dec 17, 2025

FizzBuzz Enterprise Edition is a no-nonsense implementation of FizzBuzz made by serious businessmen for serious business purposes.

Java 23,711 804 Updated Jul 15, 2024

A high performance caching library for Java

Java 17,706 1,696 Updated Jun 15, 2026

Zipkin is a distributed tracing system

Java 17,430 3,103 Updated Apr 8, 2026

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

Java 16,709 5,541 Updated Jun 15, 2026

Zuul is a gateway service that provides dynamic routing, monitoring, resiliency, security, and more.

Java 14,025 2,442 Updated Jun 13, 2026

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

Java 12,926 3,660 Updated Jun 14, 2026

Apache ZooKeeper

Java 12,764 7,330 Updated May 19, 2026

A configuration as code language with rich validation and tooling.

Java 11,411 384 Updated Jun 11, 2026

Apache Pinot - A realtime distributed OLAP datastore

Java 6,097 1,480 Updated Jun 14, 2026

Open source version of Google Authenticator (except the Android app)

Java 5,349 996 Updated Sep 28, 2020

An open source clone of Amazon's Dynamo.

Java 2,681 581 Updated Jul 24, 2023

MongoDB River Plugin for ElasticSearch

Java 1,123 211 Updated Dec 22, 2016

The Agent-Ready Backend for MongoDB.

Java 877 176 Updated Jun 13, 2026

Websocket server interface for Kafka distributed message broker

Java 353 88 Updated Dec 16, 2023

Distributed Fault-Tolerant File System

Java 347 65 Updated Oct 7, 2024
Java 172 27 Updated Feb 14, 2025

Standalone hystrix dashboard that can be started using a single jar and is very lightweight

Java 161 57 Updated Dec 12, 2019

Odin Support plugin for JetBrains IDEs

Java 135 12 Updated May 27, 2026

SDK for Android devices to interact with reelyActive reelceivers via Bluetooth Smart (BLE). We believe in an open Internet of Things.

Java 16 9 Updated Mar 31, 2016