Open-source alternatives to Trois

This project is a Three.js utility library and a collection of declarative React components designed for building 3D scenes. It provides a set of abstractions that wrap low-level primitives to manage lifecycles and memory disposal, serving as a geometry generator, a post-processing pipeline, and a scroll-driven animation tool. The library is distinguished by its specialized camera control systems, which include unified abstractions for orbit and perspective views as well as real-time face tracking and landmark detection via webcam feeds. It also features interactive transform gizmos for objec

webgl-fundamentals is a comprehensive educational resource and graphics tutorial for learning hardware-accelerated 2D and 3D rendering using the WebGL API. It serves as a structured 3D graphics curriculum and GPU programming reference, guiding users through the graphics pipeline from basic geometry to advanced rendering techniques. The project provides detailed guides on GLSL shader development, including the creation of vertex and fragment shaders. It specifically focuses on the implementation of real-time lighting models—such as directional, point, and spot lighting—and the application of s

This project is a high-level 3D graphics engine designed to render complex, hardware-accelerated environments within web browsers. It provides a comprehensive abstraction layer that manages scene graphs, cameras, and lighting, mapping high-level scene definitions onto low-level graphics APIs. By decoupling these definitions from specific hardware targets, the engine ensures consistent performance across diverse browsers and devices. The framework distinguishes itself through a robust architecture that includes a unified math library for high-frequency spatial calculations and a physically bas

This project is an educational platform and technical reference for learning real-time graphics programming through the development of custom shaders. It provides a comprehensive guide to the programmable graphics pipeline, offering a collection of tutorials and interactive examples that demonstrate how to manipulate coordinate spaces, manage buffer data, and implement complex rendering techniques in 3D environments. The repository distinguishes itself as a versatile toolkit for both photorealistic and non-photorealistic rendering. It includes modular implementations for stylized aesthetics s

Processing is a creative coding environment and Java graphics library designed for writing visual sketches that produce interactive 2D and 3D graphics and animations. It runs on the Java Virtual Machine, using an OpenGL-based hardware-accelerated rendering pipeline, and operates on a sketch-based execution model where programs run as continuous loops of setup and draw functions with event-driven input handling for keyboard, mouse, and window interactions. The environment distinguishes itself as a cross-platform sketch tool that runs visual programs unchanged on desktop, web, Android, and Rasp

This project is a React-based WebGL renderer that enables the creation of three-dimensional scenes using a declarative, component-driven architecture. It functions as a bridge between a component-based user interface library and a low-level graphics engine, allowing developers to manage lights, cameras, and geometry as standard elements within a reactive tree structure. The library distinguishes itself by treating the scene graph as a declarative hierarchy that synchronizes directly with application state and lifecycle events. It utilizes a custom reconciler to map component updates to object

OpenMoonray is a production-grade physically based rendering system and path-tracing engine. It simulates the physical behavior of light to generate high-fidelity photorealistic images and is compatible with Universal Scene Description files for visualizing complex 3D scenes and production pipelines. The system is designed as a distributed rendering framework, capable of splitting heavy computational workloads across multiple machines or cloud clusters to accelerate image generation. It integrates OpenColorIO for consistent color management across different display devices and color spaces.

Habitat-sim is a high-performance 3D simulation platform designed for training and benchmarking embodied AI agents within photorealistic indoor and outdoor environments. It serves as a simulator for AI and robotics, providing a system for generating synthetic data and simulating physical interactions. The project is distinguished by a native C++ core that enables high-throughput simulation and a rendering pipeline using physically based rendering and baked global illumination. It features a navigation system based on pre-computed navigation meshes to ensure collision-free traversal and a rigi

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

This project is a reference library of HLSL shader implementations and source code examples for Unity. It provides a collection of practical samples focused on lighting, coordinate transformations, and rendering passes for 3D graphics. The repository demonstrates the application of 3D rendering mathematics, specifically using vector and matrix calculations to determine light directions and coordinate space transformations. It includes implementations for managing multi-pass rendering pipelines and mapping coordinates between object, world, and view spaces. The material covers foundational gr

This project is a Godot shader library consisting of a collection of GLSL-based visual effects for 2D and 3D graphics. It serves as a resource for improving game visual quality through custom shader files and demo scenes. The library is organized into three primary areas: a 2D sprite effect gallery for visuals such as water simulations and palette swapping, a 3D material shader collection featuring outlines and dissolve effects, and a post-processing shader suite for full-screen effects like Gaussian blur and color inversion. The collection covers a range of capabilities including 2D sprite

whs.js is a WebGL 3D game engine and extensible application framework used to create interactive 3D experiences and browser-based games. It provides a simplified abstraction layer over low-level WebGL rendering to manage cameras, lighting, and the overall 3D environment. The framework utilizes a modular 3D scene graph to organize objects into a hierarchical system of components. It integrates multithreaded physics simulation by using web workers to run calculations in parallel with the main render loop. The system includes a modular plugin architecture that allows for the extension of base a

A-Frame is a declarative 3D scene engine and WebXR framework used to build virtual and augmented reality experiences directly in the web browser. It utilizes an entity component system where generic objects are assigned behaviors through attachable components and lifecycle hooks. The framework allows the assembly of immersive environments using HTML-like markup to define geometries, lighting, and materials. It implements WebXR standards to ensure consistent playback across different hardware and browsers, including support for VR headsets, desktops, and mobile devices. The system covers a br

Leafer UI is a high-performance HTML5 canvas rendering engine and 2D vector graphics library. It utilizes a hierarchical scene tree to manage shapes, paths, and text, providing a toolkit for building interactive canvas applications and expansive infinite canvases. The engine is designed as a cross-platform canvas toolkit that decouples core logic from the drawing API, allowing it to run across web, mobile, server, and mini-program environments. It distinguishes itself by providing specialized tools for interactive graphic editor development, including hit detection, event bubbling, and transf

Filament is a real-time physically based rendering engine designed for high-fidelity 3D graphics. It functions as a cross-platform graphics library that provides a unified interface for rendering complex models and materials across desktop, mobile, and web environments. The engine distinguishes itself through a data-oriented architecture that optimizes memory usage and processing speed, alongside a shader-variant system that generates specialized code for specific material and lighting configurations. By abstracting diverse hardware graphics backends, it ensures consistent visual performance

Three-d is a cross-platform graphics framework for the Rust programming language designed to facilitate the development of 2D and 3D applications. It provides a unified rendering toolkit that abstracts hardware-specific graphics APIs, allowing visual content to run consistently across desktop, mobile, and web environments. The library distinguishes itself by balancing high-level, immediate-mode abstractions with granular control over the rendering pipeline. It includes built-in support for instanced geometry rendering to optimize performance in complex scenes, alongside a resource-oriented sy

TRELLIS.2 is a generative image-to-3D system that creates high-resolution 3D assets with physically based rendering materials from 2D images. It utilizes a sparse voxel representation to handle complex topologies and internal structures without relying on iso-surface fields. The project features a structured latent space representation that maps geometry and texture attributes to maintain visual fidelity. It employs an optimization-free geometry reconstruction process to decode latent representations directly into voxel grids and includes a PBR texture generator for synthesizing base color, r

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

ogl is a WebGL graphics library and 3D scene graph engine designed for rendering three-dimensional scenes. It provides a lightweight framework for managing geometries and coordinating spatial transformations within a hierarchical system. The project includes a PBR shader system for creating realistic materials and a GPGPU computation framework for performing large-scale general-purpose calculations and particle simulations on the graphics processor. It also features a post-processing suite for applying visual filters to rendered scenes via frame buffers. The library covers broader capabiliti

Echo is a cross-platform game engine designed for the development of two-dimensional and three-dimensional interactive projects. It provides a unified environment that integrates scene management, visual scripting, and graphics rendering into a single workflow, allowing developers to build and deploy applications across desktop, mobile, and web platforms. The engine distinguishes itself through a node-based architecture that governs both scene organization and game logic. By utilizing a visual scripting tool and a data-flow shader graph, users can define complex behaviors and custom materials

Kajiya is a physically based rendering engine and real-time global illumination renderer. It utilizes a GPU-accelerated path tracer to simulate real-world material properties, such as roughness and metalness, to achieve photorealistic visual results. The engine incorporates a temporal super-resolution upscaler to increase final render resolution by reconstructing images from lower-resolution internal frames. It also generates high-fidelity reference images through path-tracing to verify the visual accuracy of real-time lighting outputs. The system covers 3D scene visualization and asset mana

This project is a curated collection of HLSL shader code, templates, and visual effects implementations for the Unity game engine. It serves as a repository of programmable surface shaders and a guide for building materials, lighting, and blur simulations. The collection includes a library of screen-space post-processing effects and filters designed to polish final render outputs. It provides a structured resource of examples and tutorials to assist in the development of custom shaders and technical art. The project covers the implementation of game visual effects, Unity post-processing, and

DiligentEngine is a cross-platform graphics abstraction layer and physically-based rendering engine. It provides a unified interface for executing 3D graphics commands across multiple low-level rendering backends from a single codebase, including a dedicated system for importing 3D assets via the GLTF 2.0 format. The engine features an HLSL shader cross-compiler that allows a single set of shaders to run across different graphics APIs and operating systems. It supports advanced rendering capabilities such as ray-tracing, mesh shaders, variable rate shading, and bindless resources. The framew

This project is a high-performance 3D game engine implementation written in C++. Its primary purpose centers on game engine development and retro game preservation, allowing for the study and compilation of original source code from a classic title. The engine utilizes a custom asset pipeline that integrates 3D models and scene data from Maya via a specialized export plugin. It is designed to be compiled across Windows, Linux, and macOS through a platform-specific build abstraction. Technical capabilities cover real-time OpenGL rendering, state-based game logic, and binary resource packaging

f3d is a fast 3D model viewer and rendering engine designed for visualizing 3D meshes, CAD files, and point clouds. It operates across multiple deployment profiles, functioning as a lightweight desktop application, a scientific data visualizer for volumetric and scalar datasets, a headless rendering engine for automated image generation, and a WebAssembly-based renderer for web applications. The project distinguishes itself through specialized support for Gaussian Splatting scene reconstructions and the ability to visualize complex scientific formats such as VTK, NetCDF, and HDF. It features

Hilo is an HTML5 game engine for building 2D games that run across browsers and devices. It renders graphics through Canvas, DOM, or WebGL backends, automatically selecting the best option for the target environment. The engine provides a complete game development solution with sprite, skeletal, and particle animation, along with a texture atlas system for efficient image loading and rendering. The framework distinguishes itself through its integration of the DragonBones skeletal animation engine, which drives bone-based character movement without frame-by-frame sprites, and its Chipmunk phys

3d-force-graph is a WebGL-accelerated component for rendering interactive network graphs in three-dimensional space. Built on the ThreeJS library, it positions nodes using a force-directed physics simulation that can be driven by either a D3-force or ngraph engine, producing dynamic layouts that users can rotate, zoom, and pan using mouse, keyboard, or touch controls. The component distinguishes itself through comprehensive camera control capabilities, including programmatic positioning, animated transitions, automatic timed orbiting, and zoom-to-fit functionality that frames all nodes within