Top 4 Java Middleware Projects

Thingsboard

17 15,595 10.0 Java

Open-source IoT Platform - Device management, data collection, processing and visualization.

Project mention: ThingsBoard Microservices Installation Update Problem | /r/ThingsBoard | 2023-11-29

Until recently I was still using TB v3.2.1, now I've set about updating the installation to the latest version. I proceeded as described at https://github.com/thingsboard/thingsboard/tree/master/docker:

shardingsphere-elasticjob

2 8,058 9.0 Java

Distributed scheduled job
WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
NATS client

1 535 8.9 Java

Java client for NATS
incubator-wayang

18 167 9.4 Java

Apache Wayang(incubating) is the first cross-platform data processing system.

Project mention: Support different jdbc platforms and multiple instances of same DBMS | /r/ApacheWayang | 2023-12-05

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).