fastnoise-lite
FastNoise Lite is an extremely portable open source noise generation library with a large selection of noise algorithms
delatin
JavaScript terrain mesh generation tool
heightmap-mesher
A naive heightmap mesher that takes a 2D ndarray and returns a 3D mesh
fastnoise-lite-typed
FastNoise Lite is an extremely portable open source noise generation library with a large selection of noise algorithms
ds-heightmap
Use diamond-square algorithm to generate heightmaps.