OpenSAGE is a free, open source re-implementation of SAGE, the 3D real time strategy (RTS) engine used in Command & Conquer: Generals and other RTS titles from EA Pacific. Written in C#. Not affili…

Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.

Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.

Godot Engine – Multi-platform 2D and 3D game engine

Enable AI assistant clients like Cursor, Windsurf and Claude Desktop to control Unreal Engine through natural language using the Model Context Protocol (MCP).

Unreal Engine Git Source Control Plugin (refactored)

Unreal Engine Plugin to support geotiff as landscape file format.

lua dev plugin for unreal engine 4 or 5

UnrealSharp is a plugin to Unreal Engine 5, which enables developers to create games using C# (.NET 9) with Hot Reload

🧰 The Rust SQL Toolkit. An async, pure Rust SQL crate featuring compile-time checked queries without a DSL. Supports PostgreSQL, MySQL, and SQLite.

Neon: Serverless Postgres. We separated storage and compute to offer autoscaling, code-like database branching, and scale to zero.

Parse Server for Node.js / Express

Multiplayer at the speed of light

Open source framework for building robust type-safe distributed systems with declarative infrastructure

TrinityCore Open Source MMO Framework (master = 11.2.7.64978, 3.3.5 = 3.3.5a.12340, cata classic = 4.4.2.60895)

Complete Open Source and Modular solution for MMO

rAthena is an open-source cross-platform MMORPG server.

3D Pathfinding system plugin for Unreal Engine 5.6, using Sparse Voxel Octrees. Now overhauled for UE5 with optimisations and tactical reasoning

AI Product Design Agent - Open Source

An Aspire and Orleans sample application

Experimental gameplay animation authoring editor for unreal engine

🦀 event stream processing for developers to collect and transform data in motion to power responsive data intensive applications.

Redpanda is a streaming data platform for developers. Kafka API compatible. 10x faster. No ZooKeeper. No JVM!

For developers, who are building real-time data-driven applications, Redis is the preferred, fastest, and most feature-rich cache, data structure server, and document and vector query engine.

Mountea Dialogue System is an Open-source Mountea Framework tool for Unreal Engine for creating (not just) complex dialogues! Provides its own Dialogue Tree editor and validation system.

PUER(普洱) Typescript. Let's write your game in UE or Unity with TypeScript.

A fast, scalable, distributed game server engine/framework for C++, include the actor library, network library, can be used as a real time multiplayer game engine ( MMO RPG/MOBA ), which support C#…

Server for Dragons Dogma Online

An Unreal plugin with classes and tools for creating gameplay items, inventories and equipment.