Open-source alternatives to Crown

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

G2 is a declarative data visualization engine that constructs complex charts and graphical representations by mapping raw data to visual elements through a systematic grammar of graphics. It functions as a modular framework for building custom analytical visualizations, allowing users to define visual encodings and coordinate systems independently of the underlying data. The library distinguishes itself through a multi-backend rendering pipeline that supports Canvas, SVG, and WebGL, ensuring consistent graphical performance across different environments. Its architecture relies on a plugin-ba

:dango: An interactive and responsive charting library based on G2.

G6 is a graph visualization engine designed for the analysis and representation of relational data. It provides a framework for rendering complex network structures, allowing users to map data points and their connections into interactive visual formats. The library offers a comprehensive set of tools for graph layout, interaction, and animation. It supports the customization of visual elements and node behaviors, enabling the construction of tailored graph applications that handle large-scale datasets and dynamic network updates. The project is implemented in TypeScript and provides extensi

Infographic is a declarative SVG infographic engine and AI-powered generator that transforms structured specifications and natural language descriptions into complete visual layouts. At its core, it provides a data storytelling framework that combines AI-driven layout generation with multi-pattern composition, supporting linear, circular, radial, tree, and mirror arrangements for sequential, hierarchical, and comparative data structures. The project distinguishes itself through a canvas-based interactive editor with real-time element manipulation and state history management, alongside a serv

A lightweight JavaScript graphics library with the intuitive API, based on SVG/VML technology.

Apache ECharts is a JavaScript data visualization library used for rendering interactive charts and complex data visualizations in web browsers. It functions as a canvas-based charting engine and a statistical data visualization suite that transforms datasets into visual representations. The framework provides specialized capabilities for three-dimensional data visualization, including the generation of 3D plots and globe visualizations. It also serves as a web-based geographic mapping tool for overlaying heatmaps, routes, and data distributions onto interactive maps. The library covers a br

MxEngine is an educational modern-C++ general-purpose 3D game engine. Right now MxEngine is developed only by me, #Momo, but any contributions are welcome and will be reviewed. Fow now MxEngine supports OpenGL as graphic API and targets x64 only. I develop the project in my free time, so updates…

Purely native C++ cross-platform GUI framework for Android and iOS development. https://www.boden.io

Amazon Lumberyard is no longer offered. This archive provides source for convenience only; you can also view the For continued support, visit our documentation archive on GitHub or contact Lumberyard customer support . We recommend Open 3D Engine, Lumberyard’s Apache-licensed successor. O3DE is…

Axmol Engine – A Multi-platform Engine for Desktop, XBOX (UWP), WebAssembly and Mobile games. (a fork of Cocos2d-x-4.0)

A reinvented Labyrinth game

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

Meteorite is a lowres metroidvania FPS, inspired by Metroid Prime, made for LOWREZJAM 2018.

Peity is a lightweight SVG data visualization library that transforms numeric text content and HTML attributes into small pie, donut, bar, and line charts. It functions as an attribute-driven renderer and a progressive enhancement tool, adding vector graphics to web pages by reading data directly from the DOM without requiring heavy JavaScript frameworks. The library supports custom drawing functions and dynamic color assignments, allowing for the registration of new chart types and the use of custom functions to determine segment colors. Its capability surface covers the rendering of mini d

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

bgfx is a cross-platform, graphics rendering abstraction layer designed for high-performance applications. It provides a unified interface that maps high-level rendering commands to native graphics APIs, allowing developers to maintain a single codebase that executes consistently across diverse operating systems and hardware architectures. The library distinguishes itself through a multi-threaded command submission model that decouples rendering logic from the main application thread, effectively minimizing CPU bottlenecks. It utilizes a backend-agnostic command buffer and a deferred resource

Esoterica Engine is an MIT licensed prototype game engine framework. It’s intended as a technology demonstrator, an educational tool and an R&D framework. It contains a lot of the boilerplate machinery required for resource management, serialization, gameplay, etc. It provides a lot of…

c3 is a charting library for creating reusable data visualizations and interactive charts based on the D3 JavaScript framework. It functions as a declarative visualization framework that generates complex charts through high-level configurations rather than manual SVG manipulation. The project provides a reusable chart component library and a tool for converting raw datasets into scalable vector graphics. These capabilities allow for the implementation of interactive data visualizations and web-based data reporting using standardized templates. The library supports the development of custom

Platshoot, a free/libre 2D side-scroller shooter game

Castle Game Engine

Chart.js is a declarative data visualization framework that renders interactive, responsive charts directly onto an HTML5 canvas element. It functions as a configuration-driven engine, transforming structured datasets into complex graphical representations by merging user-defined settings with global defaults. The library utilizes a high-performance rendering pipeline that executes drawing commands during each animation frame to maintain smooth visual feedback. The project distinguishes itself through a modular, extensible architecture that allows developers to register custom scales, control

GB Studio is a visual integrated development environment and game engine for creating 8-bit games for Game Boy hardware. It functions as a retro hardware ROM compiler that transpiles graphical logic into native Z80 assembly and binary images compatible with original handhelds and emulators. The project serves as a cross-platform build tool, generating both native hardware ROMs and web-compatible builds from a single project source. It utilizes a drag-and-drop interface for game logic and scene design, allowing for the creation of game mechanics and asset placement without writing low-level ma

Joint is a JavaScript library for building interactive visual diagrams and flowcharts using Scalable Vector Graphics. It provides a programmable environment for creating an interactive SVG canvas with integrated support for zooming, panning, and touch gesture controls. The framework includes a component system for defining custom shapes and programmatic elements within a vector-based coordinate system. It features a JSON-based diagram serializer for saving and loading diagram states, as well as automated layout algorithms and relationship mapping to render nodes and edges. The library covers

GDevelop is a no-code game engine designed for building interactive 2D applications through a visual scripting environment. It allows users to define game logic and object interactions using a graphical interface of conditions and actions, eliminating the need for traditional programming. The platform functions as a cross-platform creator, enabling the export of projects to web, desktop, and mobile environments from a single codebase. The engine is built on a modular game development extension framework that supports the creation and sharing of reusable behaviors and logic components. Develop