vtk.js
VTK.js is a JavaScript library available for scientific visualization in your browser. The library is available via NPM or unpkg.com CDN so it can directly be imported as a script tag inside your Web page like shown if that CodePen example. Kitware offers advanced software R&D solutions and services.
https://kitware.github.io/vtk-js/index.html
Kitware/vtk-js
Visualization Toolkit for the Web. Contribute to Kitware/vtk-js development by creating an account on GitHub.
https://github.com/Kitware/vtk-js

Seonglae Cho