Free and Open Source, Distributed, RESTful Search Engine

Google core libraries for Java

RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

Netty project - an event-driven asynchronous network application framework

Apache Kafka - A distributed event streaming platform

Apache Flink

APM, Application Performance Monitoring System

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…

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

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

High Performance Inter-Thread Messaging Library

A high performance caching library for Java

Zipkin is a distributed tracing system

Apache Pulsar - distributed pub-sub messaging system

Vert.x is a tool-kit for building reactive applications on the JVM

🏗 Build container images for your Java applications.

Generate diagrams from textual description

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

Change data capture for a variety of databases. Please log issues at https://github.com/debezium/dbz/issues.

The Java gRPC implementation. HTTP/2 based RPC

The Metadata Platform for your Data and AI Stack

Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

A damn simple library for building production-ready RESTful web services.

Efficient reliable UDP unicast, UDP multicast, and IPC message transport

Catch common Java mistakes as compile-time errors

Runtime code generation for the Java virtual machine.

jOOQ is the best way to write SQL in Java

configuration library for JVM languages using HOCON files

Apache Camel is an open source integration framework that empowers you to quickly and easily integrate various systems consuming or producing data.

This is the new home of the original DDD Sample app (previously hosted at sf.net)..