3d-tiles-renderer
https://github.com/AnalyticalGraphicsInc/3d-tiles/tree/master/specification
worldwindjs
WorldWindJS is an interactive 3D globe library featuring imagery, maps, terrain and 2D projections from the Web WorldWind virtual globe SDK from NASA and ESA plus several community contributions.
webgl-waves
A React component for rendering animated 3D wave terrain with WebGL. SSR-compatible for Next.js.
contour-mvt-server
A dedicated server for generating contour vector tiles from terrain data