A categorized collection of awesome opensource Unreal Engine 4 repos

• AI
• Anti Cheat / Cheat
• Camera
• Character Movement
• Controller
• Pawn
• Plugin
• Data Exporter
• Database Connector
• Effects
• Game Data
• Game Environment
• Gameplay
• Game Save
• Graphics
• Graphics Compute Plugins
• Importer / Runtime Data Loader
• Localization
• Locomotion
• Machine Learning
• Mobile
• Modding
• Networking
• Node
• Online Services
• Project Templates
• Scripting
• Serializing
• Sound
• VR
• UI
• Utilities
• Template
• Text Editor Extensions
• Text Formatter/Parser
• Tools
• Tweens / Object Movements
• Documents

• BTUtilityPlugin - Extension to engine behavior tree system, adding utility-based selection nodes - Plugin version
• charisma-sdk-unreal - Charisma SDK for Unreal Engine 4.
• Reasonable Planning AI - Reasonable Planning AI, Utility Reasoning with Goal Oriented Action Planning execution. Data driven with C++ and Blueprint Support.

• SCUE4-Plugin - Secure-Client; Anti-Cheat Plugin for Unreal Engine 4.
• SCUE5-Plugin - SCUE updated to Unreal 5.
• Meta Cheat Manager - A plugin that allows to call cheats with custom meta names from the console command.

• Advanced-Camera-Manager - Advanced Player Camera Component
• Editor-Camera-Position - Editor plugin for convenient control of camera position in the editor view

• SMN2 - Character Movement Network Prediction easily accessible in UE5 Blueprints!
• PBCharacterMovement - https://github.com/ProjectBorealis/PBCharacterMovement
• ALS-Community - Replicated and optimized community version of Advanced Locomotion System V4 for Unreal Engine 4.26 with additional bug fixes.
• ALS_Component - Based on ALSv4 this is Component
• ALS-Refactored - Completely reworked and improved C++ version of Advanced Locomotion System V4.
• PredictedMovement - CMC extended for predicted abilities

• LeapUnreal - Leap Motion SDK for the Unreal Engine
• myo-ue4 - Myo Plugin for Unreal Engine 4
• Swipe - A plugin for Unreal Engine 4 that exposes swipes on mobile devices as events in blueprint

• Pawn - Machinery Modelling Toolkit (Plugin for UE4)
• Morphs Player - A plugin that allows to play Morph Targets directly on the animation track of your skeletal mesh.

• PsWebServer - Civet web server integration plugin for Unreal Engine 4
• PsReplayKit - Unreal Engine 4 plugin for iOS to record or stream video from the screen, and audio from the app and microphone
• PsFacebookMobile - Just a simple Unreal Engine 4 integration of Facebook authorization for mobile devices
• UE4GameLiftClientSDK - Gamelift Client SDK for Unreal Engine 4
• acl-ue4-plugin - The official Animation Compression Library Unreal Engine 4 plugin
• MMT_Plugin - This plugin provides some basic means to add custom physics code in blueprints, which can be executed during physics sub-stepping. This repository contains only plugin binary for x64 and source code.
• Dialogue System - The Dialogue System Plugin allows you to create simple as well as multi-branch dialogoues with the help of a graph editor.
• UE4GameJoltAPI - A project including a plugin that allows you to use GameJolt's Game API to unlock achievements and post highscores to your GameJolt Page.
• Unreal Engine 4 - GameJolt API Plugin - This plugin adds Blueprint nodes to use the GameJolt API
• KawaiiPhysics - Simple fake Physics for UnrealEngine4
• UnrealLive2D - UE4 plugin for live2d model
• ArticyImporterForUnreal - Articy Importer plugin for the Unreal Engine 4.
• VRExpansionPlugin - A UE4 VR framework
• AdvancedSessionsPlugin - Advanced Sessions Plugin for UE4
• Cesium for Unreal - Bringing the 3D geospatial ecosystem to Unreal Engine
• AccelByte UE4 SDK - AccelByte UE4 SDK is a plugin for Unreal Engine 4
• MindMaker - MindMaker UE4 Machine Learning Toolkit
• UEAssimp - Assimp Mesh Importer for UE
• RealtimeMeshComponent - Unreal Engine 5 plugin component for rendering runtime generated content.
• PluginTemplate - A basic Unreal Template with Editor and Runtime Module.

• ServerRecast - UE4 plugin for navmesh export
• ue4-export-nav-data - Export ue4 navigation data to outside.

• MySQLConnectorUE4Plugin - MySQL Database Connector Plugin for Unreal Engine 4
• SQLite3UE4 - SQLite3 Database Plugin for Unreal Engine 4

• UE4-AuroraEffect - A raymarched aurora borealis effect for Unreal 4
• NiagaraUIRenderer - Niagara UI Renderer | Free Plugin for Unreal Engine
• UE5-StylizedPostProcess - Stylized Post Process for Unreal Engine 5

• SUQS - Steve's Unreal Quest System: data-driven quest system for UE4

• OceanProject - An Ocean Simulation project for Unreal Engine 4
• VoxelPlugin - Voxel plugin for Unreal Engine
• StreetMap - Import OpenStreetMap data into Unreal Engine 4
• RuntimeMeshComponent - Unreal Engine 4 plugin component for rendering runtime generated content
• Greebler - UE4 and Unity plugin to automatically add rubble in the nooks and crannies of your scene
• cashgenUE - Runtime Procedural Terrain Generator for UnrealEngine
• OpenLand - An OpenSource Landscape Auto Material
• DungeonGenerator - An Unreal Engine 4 Dungeon Generator
• ProceduralDungeon - This is an Unreal Engine 4/5 plugin to generate procedural dungeon.

• UE4-CustomGravityPlugin - Unreal Engine 4 : Custom Gravity Plugin
• UnrealSandboxTerrain - Smooth voxel terrain plugin
• VaFogOfWar - A clear and simple solution of Fog of War for Unreal Engine 4
• GASDocumentation - My understanding of Unreal Engine 4's GameplayAbilitySystem plugin with a simple multiplayer sample project.
• GASShooter - Advanced FPS/TPS Sample Project for Unreal Engine 4's GameplayAbilitySystem plugin
• Inventory + Equipment System - Generic and fully featured multipurpose inventory container and equipment system for Unreal Engine 4
• Quests - Efficient and rich featured quests system for Unreal Engine 4
• Horizontal 360 Radar - Horizontal 360º rich featured radar system, typically seen in games like Skyrim, for Unreal Engine 4
• Stats + Attributes - A powerful stats, attributes, leveling system and much more for Unreal Engine 4!
• PsRealVehicle - PsRealVehicle is the plugin for Unreal Engine 4 with simple force-driven vehicle simulation.
• ue4-targetsystemplugin - UE4 Dark Souls inspired Camera Lock On / Targeting system plugin.
• WeaponTrace-Unreal - WeaponTracing plugin for reliable melee combat.
• GameplayTesting-UE5 - This project was created with the sole purpose of performing several small gameplay tests in Unreal Engine 5.
• Bomber - This project could be useful for learners, demonstrating a clean code base, the newest UE5 features, and multiplayer functionalities.
• Arc Activities - An Activity and Quest system with a custom editor graph for creating gameplay activities for UE5.

• SPUD - Steve's Persistent Unreal Data library

• CelShader - Advanced CelShader project for Unreal Engine 4
• GhostMeshPlugin - This is a UE4 plugin that can create ghost mesh in Unreal Engine 4
• CensoredUE4 - World space area censoring solution for Unreal Engine 4. It is using blueprint actor for censoring and can be attached to any other blueprint actor like characters

• unrealcv - UnrealCV: Connecting Computer Vision to Unreal Engine
• OpenCL.uplugin - OpenCL Plugin for Unreal Engine 4

• RuntimeFilesDownloader - Runtime Files Downloader plugin for Unreal Engine. Downloading files over HTTP / HTTPS at runtime.
• RuntimeAudioImporter - Runtime Audio Importer plugin for Unreal Engine. Importing audio of various formats at runtime.
• ue4_runtimeimageloader - About Load images into Unreal at runtime without hitches
• RuntimeMeshLoader - A pluging for Unreal Engine 4, which allows to import meshes during runtime.

• UE4-BYGLocalization - Simple CSV localization system for Unreal Engine 4
• Easy Localization Tool - Introduces a way simpler method of localizing game by simply importing CSV file into engine's localization files.

• tensorflow-ue4 - TensorFlow plugin for Unreal Engine 4
• tensorflow2-ue4-ar - Augmented Reality Computer Vision Application using TensorFlow 2 and the Unreal Engine 4.23
• UELlama - Llama plugin for Unreal Engine 5

• MobileUtils - A plugin for Unreal Engine 4 that lets you integrate mobile utilities into your project
• AndroidNative - Android Native plugin for Unreal Engine that makes it easy to call Java functions via JNI.

• UAssetAPI - A low-level .NET library for reading and writing Unreal Engine 4 game assets.

• VaRest - REST API plugin for Unreal Engine 4 - we love restfull backend and JSON communications!
• socketio-client-ue4 - socket.io client plugin for Unreal Engine 4
• InfraworldRuntime - A solution that enables Unreal Engine 4 to work with Google gRPC services from either C++ or Blueprints.
• udp-ue4 - Convenience UDP wrapper for Unreal Engine 4
• tcp-ue4 - Convenience TCP wrapper for Unreal Engine 4
• socketcluster-client-ue4 - UE4 client for socketcluster framework in node.js
• UE4MasterServer - This is a plugin for Unreal Engine 4 that adds server registration, deregistration etc with a master server.
• ObjectDeliverer - ObjectDeliverer is a data transmission / reception library for Unreal Engine (C ++, Blueprint)
• UE4TcpSocketPlugin - Tcp Socket Plugin facilitates communication with a TCP server in blueprints or in code.
• Socketer -- A TCP socket blueprint library for Unreal Engine 4!
• UEWebsocket - unreal engine 4 websocket plugin for both c++ and blueprint developer
• mqtt-utilities-unreal - MqttUtilities is a plugin for Unreal Engine intended to expose MQTT client functionality to blueprints
• ble-utilities-unreal - This is Unreal Engine plugin that allows to scan for BLE devices with Cycling Power service running, connect to one of them and subscribe for its notifications
• Fetch - A Simple HTTP client for Blueprints & JSON inspired by the Fetch API
• colyseus-unreal - Colyseus Multiplayer SDK for Unreal Engine
• GGPOUE4 - Unreal Engine 4 plugin port of GGPO
• UE-DSSPlugin - Scalable MMO servers instantiation, dungeon instantiation and player balancing subsystem for unreal engine
• UE-EasyKafka - EasyKafka is a Kafka/Redpanda client sub-system for unreal engine. It supports producing and consuming records through blueprint and C++.
• Unreal-SignalR - SignalR client for Unreal Engine.
• OWS - Open World Server system

• Unreal-Magic-Nodes - Custom Kismet Node System that enables C++ code to be written on Blueprint Graphs.
• Unreal-Magic-Nodes-CS - C# Magic Nodes

• UE4_EOS_Plugin - A plugin and sample project, built for Unreal Engine 4, that implements the Epic Online Services SDK

• Nano - A tiny template for tiny Unreal games.

• Unreal.js - Unreal.js: Javascript runtime built for UnrealEngine 4
• UnrealEnginePython - Embed Python in Unreal Engine 4
• sluaunreal - lua dev plugin for unreal engine 4
• USharp - C# plugin for Unreal Engine 4
• UnLua - A feature-rich, easy-learning and highly optimized Lua scripting plugin for UE4
• UnrealCLR - Unreal Engine 4 .NET Core integration
• LuaMachine - Unreal Engine 4 Plugin for Lua APIs implementation
• puerts - Write your game with TypeScript in the ue4 or unity
• NimForUE - Nim plugin for UE5 with native performance, hot reloading and full interop that sits between C++ and Blueprints.
• nimue4 - Nim language integration for Unreal Engine 4
• kotlin-unreal - kotlin-unreal: Use the amazing Kotlin language with UnrealEngine 4
• Unreal.hx - Unreal.hx: Haxe Integration for Unreal
• UnrealEngine-Angelscript - Angelscript Integration for Unreal Engine (Note: Private repository, due to being a direct fork of the Unreal Engine source code. In order to view the repository, you must join the Epic Games organization. Learn how to do so here)
• SilvervineUE4Lua - A Lua Scripting Plugin for Unreal Engine 4
• unreal-rust - Rust integration for Unreal Engine 5

• FreeXml - A simple plugin exposing Unreal's xml parsing capabilities to Blueprints
• ue4-protobuf - This is an Unreal Engine 4 plugin that integrates Protobuf into the project without requiring you to add system PATH or anything else.
• DataConfig - Serialization framework for Unreal Engine Property System that just works!

• ArthursAudioBPs - UE4 project with various examples of audio-related stuff like visualizers, generators etc.
• AudioAnalysisTools - Audio Analysis Tools plugin for Unreal Engine. Provides a variety of functions for analyzing audio data. Works in conjunction with the Runtime Audio Importer plugin.

• OSVR-Unreal - OSVR plugin for Unreal Engine
• MixedReality-UXTools-Unreal - UX tools and components for developing Mixed Reality applications in UE4.

• React-UMG - A React renderer for Unreal Motion Graphics With Unreal.js
• Noesis/UE4Plugin - NoesisGUI Integration to UE4
• UMG-MoveableWindow
• VRUMGPlugin - A compatability layer between UE4 UMG and VR
• MeshWidgets - UE 4.13 plugin for UMG & Slate widgets on StaticMesh surface
• UMG-ResizableWidget - Resizable Widget for UMG for Unreal Engine 4
• AnimatedCrosshairsUE4 - Animated Crosshairs for Unreal Engine 4 provides 17 ready to use animated UMG widgets including demo scene to test their combination
• FastSwitcher - Fast Switcher UMG for Unreal Engine 4 loads only the needed widget
• Unreal-UMG-3DObjectInWidget - A simple Unreal Engine 4 project (precisely 4.7.4) showing how to render a 3D object/mesh in a UMG widget
• UE4GamepadUMG - Unreal Engine 4 gamepad plugin so you can use a gamepad like a mouse in UMG
• VaTexAtlas - Simple way to use texture atlases for Unreal Engine 4 UMG
• ParagonUIPrototyping - Paragon UI Prototyping using UE4.11 UMG
• BLUI - Rich HTML UI engine for UE4
• UnrealImGui - Unreal plug-in that integrates Dear ImGui framework into Unreal Engine 4.
• ue4-uitween - Unreal 4 UMG UI tweening library in C++
• ue4-canvas-gui - It's a simple Canvas GUI for Unreal Engine 4 with mouse operation
• FairyGUI-unreal - A flexible UI framework for Unreal Engine
• MDFastBinding - A versatile and performant alternative to property bindings for designer-friendly workflows in UE5.1+
• Settings Widget Constructor - A plugin that automatically generates a UI for your game settings.
• Custom Shape Button - A plugin that allows the creation of buttons of any shape or form.

• ZipUtility Plugin - Event driven 7zip utility plugin for Unreal Engine 4
• VictoryPlugin - Rama's Victory BP Plugin
• RuntimeMeshComponent - Unreal Engine 4 plugin component for rendering runtime generated content
• HoudiniEngineForUnreal - Houdini Engine for Unreal Engine is a plug-in that allows integration of Houdini technology into Unreal.
• Unreal-Library - UE Explorer's library for parsing data from games built with the Unreal Engine.
• ProjectExodus - Project Exodus - Unity to Unreal scene/project transfer tool.
• SuperluminalPlugin - UE4 Plugin for Superluminal Profiler
• UE4-Binary-Builder - An application designed to create installed Unreal Engine builds (aka Rocket builds) from Unreal Engine GitHub source.
• prefabricator-ue4 - Prefabricator - Prefab plugin for Unreal Engine 4
• WhatsMyPublicIP-ue4-plugin - In case you need to get your public IP - this can help. C++ and Blueprints
• WindowCapture2D - Library for capturing and displaying windows in real time with UnrealEngine
• UnrealFastNoise - Modular, Blueprint-friendly noise generation for UE4
• UnrealFastNoise2 - A plugin that wraps FastNoise2, allowing you to use the FastNoise2 library in blueprints.
• StevesUEHelpers - A plugin adding a bunch of common helper functionality that I use in my UE projects
• AsyncLoadingScreen - Async Loading Screen is a free and open-source plugin for Unreal Engine. Async Loading Screen allows you to easily configure a Loading Screen System in the project settings, and automatically add a Loading Screen whenever you open a new level, without Level Streaming.
• global-event-system-ue4 - A loosely coupled internal global event system (GES) plugin for the Unreal Engine. Aims to solve cross-map and cross-blueprint communication for reliable and inferable event flow.
• EnhancedCodeFlow - Drastically improves the quality of life during the implementation of game flow in C++.
• Ue4MarchingCubes - 3D Perlin Noise using Marching cubes algorithm for Unreal Engine 4
• UE4-Node-Graph-Assistant - A plugin to help you to create node graph faster and easier in unreal engine 4.
• Hermes - An Unreal Engine plugin that allows direct (deep) links into the UE4 editor
• RedTalaria - an Unreal Engine plugin providing a set of Hermes endpoints
• ue5coro - A gameplay-focused C++17/20 coroutine implementation for Unreal Engine 5.
• Pool Manager - A plugin that helps reuse objects, improving game performance by maintaining a pool of objects for reuse instead of creating and destroying them each time.
• unreal-bp-csv-parsing - Unreal Engine plugin that adds CSV parsing blueprint nodes
• MDMetaDataEditor - Unreal Engine 5.1+ plugin to enable editing meta data of Blueprint Properties, Functions, and Function and Event Parameters
• UE-EasyJWT - JWT wrapper (Engine Sub-system) for Unreal Engine.

• TP_2DSideScrollerBP

• sublime-unreal-snippets - A collection of Sublime Text 3 snippets for writing Unreal Engine 4 game code.
• vscode-unreal-snippets - Unreal Engine snippets based on https://github.com/awforsythe/sublime-unreal-snippets.

• EasyJsonParser - json parse library for unreal engine
• EasyXMLParser - xml parse library for unreal engine

• Retargeting Mixamo Animation Tool
• Mr-Mannequins-Tools - An add-on for Blender 2.8+ that enables export and import of animations and character meshes to and from UE4 without the need for re-targeting within Unreal Engine.
• optick - C++ Profiler For Games
• ue4-docker - Windows and Linux containers for Unreal Engine 4
• LocalizationUE4 - Translation Editor for Unreal Engine 4
• UnrealVersionChanger - Simple tool for faking UE version for Epic Games Store so we can install outdated / non-upgraded plugins to newer UE version without installing old UE

• Fresh Cooked Tweens - A tweening library for Unreal Engine that provide convenient curve equations to ease a value between a start and end, like a position, scale, color, anything you want to smoothly change.
• UE-BUITween - UI Tweening Libary for Unreal Engine UMG UI. Create simple tweens for UMG widgets from C++.

• GASDocumentation - My understanding of Unreal Engine 4's GameplayAbilitySystem plugin with a simple multiplayer sample project.
• Game Development & Unreal Engine Programming Guide - Game Development & Unreal Engine Programming Guide https://ikrima.dev
• UE4-Plugin-Resources - A list of community resources for Slate, Graphs, and UE4 Plugin Development.
• UE4-CheatSheet - An Cheat Sheet for Unreal Engine 4 C++ programming, licensed under CC BY-NC-SA 4.0
• unrealcpp - Unreal Engine 4 C++ examples
• MassSample - Community Mass Sample
• Guide-UnrealEngine - This repository is designed to help developers learn how to get started with Unreal Engine. This project includes tutorials and examples for using these tools with the Unreal Engine and C++
• Narxim-GAS-Example - A basic setup for using Epic's Gameplay Ability System.