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
ds-heightmap
Use diamond-square algorithm to generate heightmaps.
fastnoise-lite-typed
FastNoise Lite is an extremely portable open source noise generation library with a large selection of noise algorithms
heightmap-rgb-gen
Map generator from heightmap (comma separated numbers file). It process a heightmap as input and generates a png with a graduated color scale (customizable through the arguments)