Top 3D GitHub Repositories & Tools (2026)

Cross-vendor 3D Gaussian Splatting trainer - video to splat to mesh, Vulkan or CUDA.

🇨🇭 A React renderer for Three.js

Streaming 3D reconstruction from only video input: Revisiting Local Context for Long-Horizon Streaming 3D Reconstruction

Open Reality: phone video to AI-queryable 3D scenes. MCP tools for Claude/Codex/Cursor (npm openreality-mcp), the self-hostable broker, and the VGGT-SLAM library, in one repo. BSD-2-Clause.

JavaScript 3D Library.

Official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.

Agent skill for creative 3D visualization: turn an idea into a Three.js/Blender scene worth exploring. Claude Code + Codex plugin, 223 recipes, 440 knowledge records, 22 proved kits, 37 runnable studies.

Blockbench - A low poly 3D model editor

Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.

Filament is a real-time physically based rendering engine for Android, iOS, Windows, Linux, macOS, and WebGL2

3D visualization and mesh analysis for science and engineering

Open-source IFC toolkit: WebGPU rendering, columnar in-memory store, exact-arithmetic geometry kernel. Runs from a CDN. 30+ TypeScript packages and 5 Rust crates.

AI automation skills specifically designed for Unity

Native OpenXR VR mod for Super Mario 3D World (Wii U) on Cemu, with stereoscopic rendering, 6DOF head tracking, diorama and first-person modes.

A cross-platform, safe, pure-Rust graphics API.

G-code generator for 3D printers (Bambu, Prusa, Voron, VzBot, RatRig, Creality, etc.)

Webots Robot Simulator

An open source C++ game engine.

Modern C++ library for the development of real-time graphical applications

📬 Postprocessing for react-three-fiber