FennelFetish

jBMesh

ComfyUI

The most powerful and modular stable diffusion GUI, api and backend with a graph/nodes interface.

InfinityCube

jmonkeyengine

A complete 3D game development suite written purely in Java.

nifty-gui

Your Open Source Java OpenGL GUI. Interactive user interfaces for games or similar applications. LWJGL, JOGL, JME or Java2d rendering.