3D engine with modern graphics
3D Engine with Blender Integration
OptiScaler bridges upscaling/frame gen across GPUs
Open game and rendering engine packed into a JavaScript framework
Lightweight, high-performance HTML renderer for game developers
Vivid3D is a C++ IDE/3D engine, with python scripting.
Full featured MUD server with all the trimmings.
xSTUDIO is a high performance playback and review tool.
Modern, lightweight and efficient 2D level editor
Bloat-free Immediate Mode Graphical User interface for JVM
Vivid is a modern C++ 3D engine using OpenGL4+
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
Java 2D graphics/utility library