Free and Open Source, Distributed, RESTful Search Engine

All Algorithms implemented in Java

Google core libraries for Java

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

Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas

Bind Android views and callbacks to fields and methods.

Zipkin is a distributed tracing system

Quarkus: Supersonic Subatomic Java.

Vert.x is a tool-kit for building reactive applications on the JVM

Very spicy additions to the Java programming language.

Guice (pronounced 'juice') is a lightweight dependency injection framework for Java 11 and above, brought to you by Google.

Redis Java client

Change data capture for a variety of databases. Please log issues at https://github.com/debezium/dbz/issues.

vʌvr (formerly called Javaslang) is a non-commercial, non-profit object-functional library that runs with Java 8+. It aims to reduce the lines of code and increase code quality.

Non-Blocking Reactive Foundation for the JVM

Your go-to microservice framework for any situation, from the creator of Netty et al. You can build any type of microservice leveraging your favorite technologies, including gRPC, Thrift, Kotlin, R…

Reactive Streams Specification for the JVM

Fault tolerance and resilience patterns for the JVM

Distributed lock for your scheduled tasks

ActiveJ is an alternative Java platform built from the ground up. ActiveJ redefines core, web and high-load programming in Java, providing simplicity, maximum performance and scalability

An Intuitive Event-Driven Reactive Programming Library for Java

Airlift framework for building REST services