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

Java 74,864 25,518 Updated Sep 29, 2025

Mirror of Apache Kafka

Java 30,997 14,683 Updated Sep 29, 2025

Open Source Identity and Access Management For Modern Applications and Services

Java 29,860 7,664 Updated Sep 29, 2025

Apache Flink

Java 25,311 13,803 Updated Sep 29, 2025

APM, Application Performance Monitoring System

Java 24,540 6,620 Updated Sep 29, 2025

Jenkins automation server

Java 24,477 9,143 Updated Sep 29, 2025

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 24,404 4,717 Updated Oct 17, 2023

Zipkin is a distributed tracing system

Java 17,318 3,106 Updated Aug 15, 2025

Apache Hadoop

Java 15,292 9,121 Updated Sep 27, 2025

Quarkus: Supersonic Subatomic Java.

Java 15,006 2,962 Updated Sep 29, 2025

Logstash - transport and process your logs, events, or other data

Java 14,653 3,522 Updated Sep 29, 2025

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

Java 13,903 2,424 Updated Sep 22, 2025

AWS Service registry for resilient mid-tier load balancing and failover.

Java 12,630 3,780 Updated Jul 22, 2025

Apache ZooKeeper

Java 12,614 7,319 Updated Sep 24, 2025

🔎 Open source distributed and RESTful search engine.

Java 11,629 2,395 Updated Sep 29, 2025

Resilience4j is a fault tolerance library designed for Java8 and functional programming

Java 10,377 1,424 Updated Sep 29, 2025

Continuous Inspection

Java 9,917 2,113 Updated Sep 26, 2025

Spinnaker is an open source, multi-cloud continuous delivery platform for releasing software changes with high velocity and confidence.

Java 9,596 1,225 Updated Sep 24, 2025

Examples and server integrations for generating the Swagger API Specification, which enables easy access to your REST API

Java 7,464 2,226 Updated Sep 29, 2025

Alluxio, data orchestration for analytics and machine learning in the cloud

Java 7,079 2,952 Updated Apr 29, 2025

Tutorials for using RabbitMQ in various ways

Java 6,810 3,579 Updated Sep 23, 2025

Apache Kafka® running on Kubernetes

Java 5,410 1,408 Updated Sep 29, 2025

A digital logic designer and circuit simulator.

Java 5,139 516 Updated Aug 14, 2025

A scalable, distributed Time Series Database.

Java 5,064 1,241 Updated Dec 12, 2024

Ribbon is a Inter Process Communication (remote procedure calls) library with built in software load balancers. The primary usage model involves REST calls with various serialization scheme support.

Java 4,618 1,243 Updated Jun 23, 2025

[Unmaintained] Open source two-factor authentication for Android

Java 3,741 375 Updated Jun 14, 2022

Kubernetes integration with Spring Cloud Discovery Client, Configuration, etc...

Java 3,522 1,050 Updated Sep 29, 2025

Apache CloudStack is an opensource Infrastructure as a Service (IaaS) cloud computing platform

Java 2,632 1,228 Updated Sep 29, 2025

Apache Flume is a distributed, reliable, and available service for efficiently collecting, aggregating, and moving large amounts of log-like data

Java 2,557 1,563 Updated Oct 10, 2024

Confluent Schema Registry for Kafka

Java 2,354 1,146 Updated Sep 29, 2025
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