BlueMap-Minecraft/BlueMap: A Minecraft mapping tool that creates 3D models of your Minecraft worlds and displays them in a web viewer.
github.com/BlueMap-Minecraft/BlueMapBlueMap is a program that reads your Minecraft world files and generates not only a map, but also 3D-models of the whole surface.
With the web-app you then can look at those in your browser and basically view the world as if you were ingame!
Or just look at it from far away to get an overview.