RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

High Performance Inter-Thread Messaging Library

Suite of tools for deploying and training deep learning models using the JVM. Highlights include model import for keras, tensorflow, and onnx/pytorch, a modular and tiny c++ library for running mat…

Feign makes writing java http clients easier

Non-Blocking Reactive Foundation for the JVM

Kubernetes integration with Spring Cloud Discovery Client, Configuration, etc...

an open source solution to application performance monitoring for java server applications

OpenTracing API for Java. 🛑 This library is DEPRECATED! https://github.com/opentracing/specification/issues/163

Java client for InfluxDB

Rollbar for Java and Android

One of the data mining projects