Design patterns implemented in Java

Free and Open Source, Distributed, RESTful Search Engine

Spring Framework

The java implementation of Apache Dubbo. An RPC and microservice framework.

Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas

Netty project - an event-driven asynchronous network application framework

Mirror of Apache Kafka

Jenkins automation server

Apache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.

JDK main-line development https://openjdk.org/projects/jdk

MyBatis SQL mapper framework for Java

🚌 The IK Analysis plugin integrates Lucene IK analyzer into Elasticsearch and OpenSearch, support customized dictionary.

Most popular Mocking framework for unit tests written in Java

Quarkus: Supersonic Subatomic Java.

Suite of tools for deploying and training deep learning models using the JVM. Highlights include model import for keras, tensorflow, and onnx/pytorch, a modular and tiny c++ library for running mat…

Graphs for Everyone

Apache Druid: a high performance real-time analytics database.

APM, (Application Performance Management) tool for large-scale distributed systems.

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

Redis Java client

The Java gRPC implementation. HTTP/2 based RPC

Apereo CAS - Identity & Single Sign On for all earthlings and beyond.

Java JWT: JSON Web Token for Java and Android

CoreNLP: A Java suite of core NLP tools for tokenization, sentence segmentation, NER, parsing, coreference, sentiment analysis, etc.

A simple expressive web framework for java. Spark has a kotlin DSL https://github.com/perwendel/spark-kotlin

PocketHub Android App

📲cim(cross IM) 适用于开发者的分布式即时通讯系统

Distributed and fault-tolerant realtime computation: stream processing, continuous computation, distributed RPC, and more

📈 Capturing JVM- and application-level metrics. So you know what's going on.

Apache Tomcat