Unicorn CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc
Phaser is a free and fast 2D game framework for making HTML5 games
A re-implementation of Freelancer
Framework to facilitate communication in the Unity game engine
Godot game template and component-based framework
Dedicated Game Server Hosting and Scaling for Multiplayer Games
Easy to use Python library for creating 2D arcade games
3D game engine/framework in C, with Luajit and Python bindings now
Ct.js is a desktop game engine that makes learning programming fun
Creative cellular automata browser game
maXbox is a script tool engine, compiler and source lib all in one exe
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
This software is a particle effect editing tool
Orx: Portable Game Engine
The HTML5 Creation Engine
Capstone disassembly/disassembler framework
Multi-engine plugin to specify agents with reinforcement learning
CGL (C Game Library) is a multipurpose library
Simple DirectMedia Layer
Framework for creating human behaviour experiments in Unity
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
SonarSource Static Analyzer for Java Code Quality and Security
Game library for Pascal
Arianne is an engine to develop multiplayer online games like Stendhal
VRMosaic for Lazarus