30 open-source projects similar to skypjack/entt, ranked by shared indexed features. Tags may describe platforms or build tools rather than the same primary purpose. Check each project’s use case, license, and deployment requirements before treating it as a replacement.
Flecs is a high-performance entity component system framework and data-oriented programming library. It serves as a simulation engine core and game engine architecture tool, decoupling state from behavior by separating entities, components, and systems. The framework features a runtime reflection layer for dynamic data inspection and a built-in scripting system for defining entity behavior without recompilation. It also includes a network interface and REST API for remote simulation administration and state querying. The library covers a broad surface of simulation capabilities, including ar
Entitas is a data-oriented Entity Component System framework for Unity. It is designed to separate game state into components and logic into systems, utilizing a data-oriented design to optimize CPU cache usage, memory usage, and processing speed. The framework includes a C# source code generator that automatically produces boilerplate classes, entity accessors, and context singletons to reduce manual coding. It also provides a Unity editor debugging tool for real-time runtime state visualization, system performance monitoring, and visual entity inspection. The system manages entity lifecycl
Flame is a 2D game engine for Flutter and Dart. It provides a component-based game framework for managing entities and their lifecycles through a hierarchical architecture, alongside a dedicated system for game asset management and input handling. The engine distinguishes itself through a specialized integration layer for external physics engines to handle rigid body dynamics and collision detection. It also features a high-performance task model that uses isolates to offload heavy computations and prevent main thread blocking. The framework covers a broad range of capabilities including vis
Cocos2d-x is a high-performance C++ game development framework designed for building and deploying interactive applications across mobile, desktop, and web platforms. It functions as a cross-platform game engine that utilizes an entity-component system to manage object lifecycles, behaviors, and spatial relationships within a unified codebase. The engine is distinguished by its specialized 2D graphics rendering pipeline, which is optimized for hardware-accelerated performance when displaying sprites, particle effects, and skeletal animations. It provides developers with low-level access to gr
Entitas-CSharp is a data-oriented architectural framework for managing application state and logic in C# and Unity environments. It implements the Entity Component System pattern to separate raw data components from the logic systems that process them. The framework includes a code generator that automatically produces type-safe boilerplate classes and methods at build time. It also provides a visual state inspector for examining entities and components in real time within the Unity editor. The library covers data-oriented programming and game state debugging, utilizing a memory-efficient ap
s&box is a game development platform built on Valve's Source 2 engine, integrating the .NET runtime as a first-class scripting and gameplay logic layer. It provides a full-featured visual editor that combines asset management, level design, and code editing into a single workflow, enabling developers to create and edit games within a modern editor environment. The platform distinguishes itself through a managed-native interop bridge that allows C# code to interact directly with native Source 2 systems for high-performance communication, alongside a hot-reload scripting system that supports li
This is a web-based 3D game engine designed for creating high-performance interactive experiences on web and mobile platforms. It functions as a real-time graphics renderer and physics engine, utilizing a component-based scene graph to organize entities and their properties for three-dimensional rendering. The engine includes a visual scene editor that allows for the design of environments through a graphical interface, which then exports these assets as executable code. Its broader capabilities cover real-time graphics rendering for 2D and 3D elements, physical world simulation for object c
Halley is a modular C++ game engine designed for building cross-platform interactive applications. Its core identity is defined by a hardware-abstraction graphics pipeline for consistent rendering across different operating systems and an entity-component-system architecture that separates game state from processing logic. The framework features a hot-reloading development environment that allows updating application logic and assets at runtime without requiring a full process restart. It also includes a multiplayer networking framework based on an asynchronous messaging system to manage real
Babylon.js is a JavaScript game engine and real-time graphics renderer designed for creating interactive three-dimensional visuals and applications. It functions as a web-based 3D framework and WebGL engine that enables the deployment of high-performance 3D content across various web platforms and devices. The project provides tools for web-based 3D game development, real-time graphics rendering, and the creation of browser-based interactive visualizations. It also supports the development of WebXR virtual and augmented reality experiences using standard web technologies. The framework cover
FXGL is a 2D game engine and development framework designed for Java and Kotlin. It provides a structured environment for building cross-platform desktop games, integrating a central game loop with an entity component system and a JavaFX-based scene graph for rendering. The toolkit distinguishes itself by providing a comprehensive suite of integrated libraries for game AI pathfinding, physics collision resolution, and multiplayer networking via TCP and UDP protocols. It includes specialized systems for adaptive user interface design using global stylesheets and a data-driven asset management
This project is an open-source 3D game engine designed for building high-fidelity games, simulations, and cinematic environments. It functions as a robotics simulation platform with native integration for ROS 2 to model robot controllers and sensors. The engine features a multi-threaded Forward+ physically based renderer that supports hardware-accelerated ray tracing and global illumination. The system is built on a modular extension architecture using Gems to add or replace features without modifying core binaries. It includes a native SDK for AWS cloud integration, enabling IAM authenticati
Hazel is a C++ game development framework and 3D graphics rendering engine designed for building high-performance interactive software. It provides a foundational architecture that enables the construction of desktop applications through native hardware acceleration. The project includes a dedicated game engine editor that allows for the design and testing of interactive 3D and 2D scenes within a unified environment. This editor utilizes an immediate mode interface to maintain synchronization with the engine state, while a hardware-agnostic abstraction layer handles rendering commands across
This repository provides the source code for the Unity game engine, serving as a reference for the internal implementation of its core systems and managed scripting environment. It functions as a development resource for understanding how high-level C# logic interacts with the underlying engine architecture to build interactive 2D and 3D applications. By providing visibility into the engine's source files, this project enables developers to inspect execution flows and trace implementation details. This transparency supports the troubleshooting of complex behaviors and the analysis of how spec
A completely free, open-source, 2D game engine built on proven torque technology.
Gameplay is a high-performance C++ game engine and cross-platform framework designed for developing 2D and 3D interactive games. It functions as both a 3D graphics engine for rendering environments and a 2D game development kit for creating sprite-based mechanics. The framework provides a cross-platform abstraction layer to ensure that game logic and graphics run across various hardware and software platforms using a shared codebase. The engine implements a hardware-accelerated rendering pipeline and component-based game logic to separate data from behavior. It utilizes a native C++ impleme
This project is a collection of portable, header-only C functions designed for integration into software projects without complex build dependencies or external linking requirements. It provides a suite of low-level utilities for graphics, audio, and data management, focusing on direct memory manipulation and zero-dependency portability. By utilizing a single-header distribution model, the library simplifies dependency management while allowing developers to maintain full control over memory allocation and binary size through compile-time configuration. The library distinguishes itself by off
Spring is a cross-platform game engine and framework designed specifically for the development and execution of multiplayer real-time strategy games. It provides a high-performance simulation environment for managing large-scale battles and unit movements across different operating systems using a shared codebase. The engine functions as a multiplayer game server and networking layer, coordinating real-time game state and match synchronization between remote players. It includes a dedicated lobby client system for multiplayer match coordination as well as the capability to execute single-play
This project is an immediate-mode graphical user interface library designed for rapid development of tools and debugging interfaces. By generating UI geometry every frame through procedural code, it eliminates the need for persistent state synchronization between application data and the interface. It is primarily intended for integration into existing rendering pipelines, where it produces raw vertex buffers and draw commands that are agnostic to the underlying graphics API. The library distinguishes itself through a highly decoupled architecture that supports complex, dockable, and multi-vi
Panda3D is a cross-platform game engine and 3D graphics rendering system developed for Python and C++. It functions as a comprehensive framework for building interactive 3D applications, providing a real-time physics simulator and a specialized 3D asset pipeline tool. The engine distinguishes itself by combining a high-performance C++ core with interoperable Python language bindings. It utilizes a scene graph architecture to organize 3D objects and provides a pipeline-based asset conversion system to optimize models and textures for runtime loading. Its capability surface includes low-level
NOTE: The current stable release 1.0.0 breaks backwards compataibility with < 1.0.0. See the change log for details.
This repository is a collection of reference implementations and sample projects demonstrating data-oriented design using the Unity Entities package. It provides a suite of examples for implementing an entity component system that separates game data into components and logic into systems. The collection includes specialized demonstrations for rendering large volumes of entities via graphics pipelines, implementing high-performance collision and rigid body dynamics through data-oriented physics, and managing multiplayer state synchronization using the network framework for entities. It also p
Space Station 14 is a C# multiplayer game and roleplay simulation framework. It is built upon an Entity-Component-System (ECS) game engine that separates logic into systems and data into components to manage complex entity interactions. The project functions as a grid-based physics simulator with a YAML data-driven prototype system for defining game objects. The project features a specialized 2D sprite rendering engine that maps server-side appearance data to client-side shaders. It implements a networking model with client-side prediction and dirty-flagged state synchronization to reduce inp
Amethyst is a data-driven game engine written in Rust for building high-performance 2D and 3D games. It is built on an entity component system architecture that decouples game state from logic to enable parallel processing and reusable code. The framework features a glTF 3D renderer for importing scenes and geometry using physically based materials. It also serves as a multiplayer game framework, providing network transport abstractions and state synchronization for real-time online experiences. The engine covers a broad range of capabilities, including hybrid 2D/3D rendering, asynchronous a
Bevy is a cross-platform game engine and framework built in Rust, designed for creating interactive simulations and graphical applications. It utilizes a data-oriented entity-component-system architecture to manage game state, organizing data into contiguous memory blocks to facilitate high-performance processing and massive parallelization of entities. The engine distinguishes itself through a modular plugin architecture and a system-based task scheduler that automatically parallelizes logic by analyzing data access patterns. By employing reactive change detection and deferred command buffer
Mindustry is a cross-platform game engine and factory automation simulation that combines resource management with tower defense strategy. Players construct complex supply chains and automated networks to process materials while building defensive structures to protect a core from waves of hostile mechanical forces. The project utilizes a deterministic lockstep networking model to ensure simulation consistency across desktop and mobile devices. It is built on an entity-component-system architecture and a tile-based grid simulation, allowing for the efficient management of thousands of active
This project is a 3D game engine built with C++20 that utilizes the Vulkan API to provide high-performance hardware-accelerated graphics. It features a render-graph architecture designed to manage resource dependencies and optimize command submission across different operating systems and GPU vendors. The engine distinguishes itself through integrated tools for real-time collaborative development, allowing multiple users to coordinate, build, and arrange game assets within an active session. It also includes a centralized platform for sharing and discovering user-generated content, facilitati
LumixEngine is a high-performance C++ 3D game engine designed for building interactive 3D applications. It is built on a data-oriented component system that organizes objects in contiguous memory blocks to maximize CPU cache performance. The engine features a dynamic binary plugin architecture for loading external modules at runtime and an embedded scripting virtual machine that exposes internal logic for external control without recompilation. Computational workloads are managed via a task-based parallel execution model that distributes jobs across multiple processor cores. The framework in
Murder is an entity component system game engine designed for 2D game development. It provides a core framework for managing game objects through an ECS architecture and includes a dedicated 2D game editor for asset management and real-time property configuration. The engine features a specialized 2D rendering pipeline supporting pixel art, sprite slicing, and parallax effects. It includes a hierarchical A* pathfinding system for agent navigation and a comprehensive asset management system for serializing and loading game resources. The project covers a broad range of capabilities, including