MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.

An extremely easy way to perform background processing in Java. Backed by persistent storage. Open and free for commercial use.

A Java library for capturing, crafting, and sending packets.

Online book which introduces the main concepts required to write graphics games or any other applications using Vulkan in Java by using the LWJGL library.

Official master repo (Git version)

Swing toast notifications use for java desktop application

Provides JVM network packet processing library for rapid development.

OPC made simple

This is a library that uses EffekseerForMultiLanguages to load and render effects made with Effekseer in jme.

Java bindings for V-HACD (https://github.com/kmammou/v-hacd)

JMonkeyEngine - Substance Painter link

A testcontainers implementation for Ignition by Inductive Automation.