Software License: MIT

RevitTrueGltf

RevitTrueGltf is advanced, open-source Revit to glTF 2.0 exporter plugin built for both high-fidelity rendering and full BIM data integration. It faithfully preserves PBR materials and complete element parameters, bridging the gap between Revit authoring and modern 3D engines (e.g., Babylon.js, Three.js) for Digital Twins and O&M workflows.

X_ITE

X_ITE X3D Browser, view and manipulate X3D, VRML, glTF and other 3D sources in HTML.

gltf-builder

JS library for building glTF models programmatically. It aims to make procedural generation easier by letting you build up a model piece-by-piece without having to worry about the structure of the glTF file format itself.

fastgltf

A modern C++17 glTF 2.0 library focused on speed, correctness, and usability