1.apache / pulsar
Apache Pulsar - distributed pub-sub messaging system
+223 stars
from 15,131 · score 5.41
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2.apache / eventmesh
EventMesh is a new generation serverless event middleware for building distributed event-driven applications.
+37 stars
from 1,721 · score 3.64
3.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
+23 stars
from 1,190 · score 3.18
4.allegro / hermes
Fast and reliable message broker built on top of Kafka.
+19 stars
from 854 · score 3.00
5.zeromq / jeromq
JeroMQ is a pure Java implementation of the ZeroMQ messaging library, offering high-performance asynchronous messaging for distributed or concurrent applications.
+18 stars
from 2,436 · score 2.94
6.tigase / tigase-server
Highly optimized, extremely modular and very flexible XMPP/Jabber server
+5 stars
from 353 · score 1.79
7.ballerina-platform / module-ballerina-mqtt
Ballerina MQTT Module.
+1 stars
from 104 · score 0.69