This was a project I made in my youth that produces worlds in Minecraft. While it still works, it produces worlds in the old world format. I may come back to this one day and make it make it generate the new format.
A terrarin generator for minecraft that generates floating islands.
requires dmd and dub to build
http://dlang.org/download.html#dmd
http://code.dlang.org/download
dub build --build=release
./world_gen --help