Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.

Free and Open Source, Distributed, RESTful Search Engine

Spring Framework

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.

Getting Started with Spring Boot 3:

Netty project - an event-driven asynchronous network application framework

A browser automation framework and ecosystem.

Mirror of Apache Kafka

Open Source Identity and Access Management For Modern Applications and Services

Jenkins automation server

Redisson - Valkey and Redis Java client. Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Over 50 Valkey and Redis based Java objects and services: Set, Multimap, SortedSet, Map, List, Queu…

A Java serialization/deserialization library to convert Java Objects into JSON and back

GraalVM compiles Java applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀

Most popular Mocking framework for unit tests written in Java

Logstash - transport and process your logs, events, or other data

Graphs for Everyone

Zuul is a gateway service that provides dynamic routing, monitoring, resiliency, security, and more.

The ZAP by Checkmarx Core project

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

The Java gRPC implementation. HTTP/2 based RPC

Java JWT: JSON Web Token for Java and Android

Resilience4j is a fault tolerance library designed for Java8 and functional programming

Feign makes writing java http clients easier

Continuous Inspection

Java JsonPath implementation

Spring Security

Flyway by Redgate • Database Migrations Made Easy.