Java/JavaFX/Kotlin Game Library (Engine)
A free & open-source 2D sprite editor, made with the Godot Engine
Modern, lightweight and efficient 2D level editor
A Strong and Easy-to-use Single View 3D Hand+Body Pose Estimator
rayshade and POV for Mathematica Export + view
Vivid is a modern C++ 3D engine using OpenGL4+
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A fast, self-contained, highly customizable Aseprite-to-Unity importer
Cross-platform 2D and 3D game engine
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
Simple, open-source 2D graphics for everyone
Simple animation of a journey at light speed
Exports Flash .FLAs to GPU-friendly formats
DragonBones ActionScript Runtime
XNA based game engine completely written in c#
Java 2D graphics/utility library
3D game engine for C and C++
KPEdit - A 2D skeletal animation editor.
A generalization of Conway's Game of Life
Game engine supporting many 3D/2D formats and graphic effects
A cross-platform Java 2D graphics library using OpenGL.