Design patterns implemented in Java

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

Everything you need to know to get the job.

Free universal database tool and SQL client

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

Desktop/Android/HTML5/iOS Java game development framework

Redisson - Valkey & 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, Queue,…

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

High Performance Inter-Thread Messaging Library

A high performance caching library for Java

Modern Java - A Guide to Java 8

Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud storage, ensuring privacy and control over your data.

Generate diagrams from textual description

Admin UI for administration of spring boot applications

A Java API for generating .java source files.

A barebones WebSocket client and server implementation written in 100% Java.

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

Feign makes writing java http clients easier

Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

Efficient reliable UDP unicast, UDP multicast, and IPC message transport

📈 Capturing JVM- and application-level metrics. So you know what's going on.

Runtime code generation for the Java virtual machine.

Hazelcast is a unified real-time data platform combining stream processing with a fast data store, allowing customers to act instantly on data-in-motion for real-time insights.

configuration library for JVM languages using HOCON files

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.

BTrace - a safe, dynamic tracing tool for the Java platform

Advanced Java Redis client for thread-safe sync, async, and reactive usage. Supports Cluster, Sentinel, Pipelining, and codecs.

An Open Source Java Decompiler Gui for Procyon

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…

Apache Ignite