Just discovered this site (Azgaar) independently through some google searches and raced back here to check it hadn't been shared already... turns out it has - thanks
@JohnnFour - but OMG, what a cracker! can't believe no-one has posted any positive (or other) comments in this thread. This is an amazingly well-crafted chunk of code and a real boon for all world-builders, whether you just want a one-click-wonder or a fully customisable solution. I've just finished converting my new campaign world map into a height map using the tools in the app and then run it through the generator - bingo! hours saved tracing rivers, working out biomes etc.. I'll leave out the more fine-grained auto-generated content like country names and military unit positions (!) but this has literally made my year.