There was Dave Allen's World Builder suite. It had a tectonics simulator built on his earlier tec software, a climate model based on his earlier clim...
The 64-bit version of Wilbur didn't seem to have any real problem with that first image (6118x4286). It was a bit pokey on my Core i7 3770 w/32GB (30...
Your question hits one of my pet peeves. The map is nice. the hand-drawn elements are well done. The labels and text look a little too perfect to go...
http://www.cartographersguild.com/mapping-challenge-archive/18120-march-april-2012-lite-challenge-entry-csu-johnsondales-new-found-lands.html I added...
Fractal Terrains doesn't always produce good effects with its painting tools, though. The biggest problem (for me, anyhow) arises when using brushes...