1.aeron-io / aeron
Efficient reliable UDP unicast, UDP multicast, and IPC message transport
+191 stars
from 8,749 · score 5.26
Trending repositories
Ranked by Attention Score: stars gained over the last 90 complete days
15 repositories by Attention Score · Aug 5, 2026 – Nov 2, 2026 (UTC)
2.apache / rocketmq
Apache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.
+158 stars
from 22,488 · score 5.07
3.apache / pulsar
Apache Pulsar - distributed pub-sub messaging system
+91 stars
from 15,263 · score 4.52
4.apache / artemis
Apache Artemis
+35 stars
from 1,036 · score 3.58
5.apache / activemq
Apache ActiveMQ
+20 stars
from 2,442 · score 3.04
6.nats-io / nats.java
Java client for NATS
+13 stars
from 670 · score 2.64
7.hivemq / hivemq-community-edition
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
+10 stars
from 1,203 · score 2.40
8.allegro / hermes
Fast and reliable message broker built on top of Kafka.
+10 stars
from 863 · score 2.40
9.zeromq / jeromq
JeroMQ is a pure Java implementation of the ZeroMQ messaging library, offering high-performance asynchronous messaging for distributed or concurrent applications.
+9 stars
from 2,445 · score 2.30
10.spring-cloud / spring-cloud-stream
Framework for building Event-Driven Microservices
+6 stars
from 1,066 · score 1.95
11.wso2 / product-ei
An open source, a high-performance hybrid integration platform that allows developers quick integration with any application, data, or system.
+5 stars
from 398 · score 1.79
12.apache / incubator-heronArchived
Apache Heron (Incubating) is a realtime, distributed, fault-tolerant stream processing engine from Twitter
+3 stars
from 3,621 · score 1.39
13.tigase / tigase-server
Highly optimized, extremely modular and very flexible XMPP/Jabber server
+2 stars
from 356 · score 1.10
14.joel-jeremy / emissary
Emissary is simple, yet 🗲FAST🗲 messaging library for decoupling messages (requests and events) and message handlers 🚀
+1 stars
from 109 · score 0.69
15.apache / qpid-broker-j
Mirror of Apache Qpid Broker-J
+1 stars
from 70 · score 0.69