Nortantis is a fantasy map generator and editor originally created as an academic project. It uses a simple tectonic plate simulation to create islands and continents with trees, rivers, and mountains. The result has the appearance of an old-fashioned hand-drawn map.
For more information and examples of generated maps, see the project page here.
Privacy policy: This program will not transfer any information to other networked systems unless specifically requested by the user or the person installing or operating it. (I had to add this for digital signing. Nortantis doesn't transfer any personal information.)