Yes the MeDem project has always been free and non commercial. It is a labour of love (and pain !). Outerra exists in two forms - a demo and a paid up thingy. I dont know much about the paid up direction they are going in but its some kind of world exploration tool or a game engine or something. But for the free download at the mo there is only an earth option. In fact until recently there were no options, you got earth. Soon there will be MeDem listed on the list of worlds to explore and the data is hosted and automatically downloaded from them as you explore it.

It does look very cool now. I got mine going yesterday and had a wander. There is much to do but at least we have outerra support now for tree placement so we have Mirkwood, Fangorn, Lorien etc in there now. We dont have full biome control so the snow in some places looks great in other places there should be some but there is not. As time goes on we can provide all the masks for them to place it better or we can adjust our landscape heights to match up with that which outerra considers snowy. Monks has provided some images above where we draped the GTS texture over World Machine which shows the land types better since we use the programmable texture shader to generate that in non real time. Outerra tho is real time and so much more fun at the expense of some loss of ability to control that biome in its current state.