InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now. Learn more →
Top 12 Java Pubsub Projects
-
Ingest real-time data from Kafka, Pulsar, or CDC sources like Postgresand MySQL, with built-in support for Debezium.
-
InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
-
JeroMQ
JeroMQ is a pure Java implementation of the ZeroMQ messaging library, offering high-performance asynchronous messaging for distributed or concurrent applications.
The ImageProcessor in the repository has been implemented in C# using ZeroMQ and the NetMq nuget package. It also uses SixLabors.ImageSharp to resize the image. It consists of
-
eventmesh
EventMesh is a new generation serverless event middleware for building distributed event-driven applications.
-
-
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
-
-
twitch4j
A JVM library for all Twitch APIs, including Chat, Helix, and EventSub (webhook/websocket/conduit). It includes advanced features for large-scale apps such as connection pooling, rate-limiting, and more!
-
SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
-
-
-
-
-
pulsar-recipes
A StreamNative library containing a collection of recipes that are implemented on top of the Pulsar client to provide higher-level functionality closer to the application domain.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Java Pubsub discussion
Java Pubsub related posts
-
Kafka-on-Pulsar Got Archived
-
Apache Pulsar VS quix-streams - a user suggested alternative
2 projects | 7 Dec 2023 -
Help finding open source Terraform configurations that are not educational projects or developer tools
-
Analyzing Real-Time Movie Reviews With Redpanda and Memgraph
-
There are about Pulsar 10k users in Slack, but about 70 in this subreddit.
-
Kafka alternatives
-
Is Redpanda going to replace Apache Kafka?
-
A note from our sponsor - InfluxDB
www.influxdata.com | 19 May 2025
Index
What are some of the best open-source Pubsub projects in Java? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Apache Pulsar | 14,601 |
| 2 | JeroMQ | 2,397 |
| 3 | eventmesh | 1,646 |
| 4 | AutobahnAndroid | 1,527 |
| 5 | hivemq-community-edition | 1,113 |
| 6 | Hermes | 828 |
| 7 | twitch4j | 384 |
| 8 | tigase-server | 333 |
| 9 | memq | 136 |
| 10 | aop | 115 |
| 11 | vertx-async-to-sync | 12 |
| 12 | pulsar-recipes | 12 |
Sponsored
InfluxDB – Built for High-Performance Time Series Workloads
InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
www.influxdata.com