Repository Index

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

• rocketmq
• cloud-native
• eventing
• java

Apache Pulsar - distributed pub-sub messaging system

• pulsar
• pubsub
• messaging
• streaming

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

• messaging
• java
• c-plus-plus
• ipc

Micro second messaging that stores everything to disk

• chronicle
• queue
• java
• performance

Apache ActiveMQ

• activemq
• java
• amqp
• amqps

JeroMQ is a pure Java implementation of the ZeroMQ messaging library, offering high-performance asynchronous messaging for distributed or concurrent applications.

• jeromq
• libzmq
• messaging
• networking

HiveMQ CE is a Java-based open source MQTT broker that fully supports MQTT 3.x and MQTT 5. It is the foundation of the HiveMQ Enterprise Connectivity and Messaging Platform

• mqtt-broker
• hivemq
• mqtt
• iot

Framework for building Event-Driven Microservices

• microservices
• messaging
• event-driven-microservices
• stream-processing

Apache Artemis

• java
• apache
• messaging
• broker

Fast and reliable message broker built on top of Kafka.

• hermes
• kafka
• pubsub
• messaging

Java client for NATS

• nats
• java
• client
• messaging

An open source, a high-performance hybrid integration platform that allows developers quick integration with any application, data, or system.

• integration
• middleware
• wso2
• esb

Highly optimized, extremely modular and very flexible XMPP/Jabber server

• tigase
• xmpp
• server
• java

Emissary is simple, yet 🗲FAST🗲 messaging library for decoupling messages (requests and events) and message handlers 🚀

• java
• jvm
• messaging
• requests

Kommunicate Android AI Agent SDK

• chat
• live
• chatbot
• support

Mirror of Apache Qpid Broker-J

• java
• qpid
• network-server
• apache

Stateful actors on Apache Flink 2.x and Java 21 — durable per-key state, exactly-once messaging, Kafka and Kinesis I/O, Kubernetes-native deployment. Continues the Apache Stateful Functions programming model on the modern Flink line.

• actor-model
• apache-flink
• distributed-systems
• event-driven