Tile Server has a unique endpoint for listing all the MBtiles, including Quantized Mesh Terrain and serving it as .terrain XYZ URL along with the required Layer.JSON  for use in Cesium WebGL, Cesium for Game Engines, Terriajs, and other Mapping Viewers that use this format.

(as well as the needed headers that these mapping clients expect in the URL parameters)

Tile Server can also serve Terrain-RGB MapBox Format, MapZen Terrarium PNG RGB Encoded tiles

ESRI ArcGIS LERC2 Tiles and other formats

Compatible with Cesium WebGL and Cesium for Unity and Unreal Engine

Tech Maven Geospatial has the ability to produce Quantized Mesh for any area of the world! Many areas have already been Completed

Quantized Mesh Grand Canyon

We have a Desktop application for preparing Digitial Elevation Model (DEM) Terrain Tiles in multiple formats.  DEM DOWNLOADER

the application can prepare Quantized Mesh .Terrain Tiles for your area of interest/operation.

as well as ESRI ArcGIS Game Engine and Runtime SDK format LERC2 tiles

as well as MapBox format terrain-rgb